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Document And Entity Information - USD ($) shares in Thousands	9 Months Ended
	Jan. 28, 2012	Feb. 27, 2012	Oct. 29, 2010
Entity Registrant Name	DAKTRONICS INC /SD/
Entity Central Index Key	0000915779
Current Fiscal Year End Date	--04-28
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 451,614,498
Entity Common Stock, Shares Outstanding		41,892,570
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jan. 28, 2012

CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Jan. 28, 2012	Apr. 30, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 28,552	$ 54,308
Restricted cash	2,109	1,546
Marketable securities	19,916	22,943
Accounts receivable, net	53,925	61,778
Inventories	51,979	46,889
Costs and estimated earnings in excess of billings	34,557	24,193
Current maturities of long-term receivables	6,028	5,343
Prepaid expenses and other assets	6,155	6,312
Deferred income taxes	9,975	9,640
Income tax receivables	3,813	4,870
Total current assets	217,009	237,822
Advertising rights, net and other assets	1,155	1,383
Long-term receivables, less current maturities	12,952	13,558
Goodwill	3,327	3,384
Intangibles	1,466	1,654
Deferred income taxes	271	180
Total noncurrent assets	19,171	20,159
PROPERTY AND EQUIPMENT:
Land	1,497	1,497
Buildings	56,079	55,457
Machinery and equipment	62,916	58,233
Office furniture and equipment	15,640	15,648
Computer software and hardware	41,162	37,754
Equipment held for rental	1,318	1,283
Demonstration equipment	9,060	8,086
Transportation equipment	4,014	3,688
Property and equipment, gross	191,686	181,646
Less accumulated depreciation	122,664	111,780
Property and equipment, net	69,022	69,866
TOTAL ASSETS	305,202	327,847
CURRENT LIABILITIES:
Notes payable, bank	3,180	2,316
Accounts payable	31,951	29,223
Accrued expenses	17,917	21,748
Warranty obligations	14,095	14,474
Billings in excess of costs and estimated earnings	13,952	20,284
Customer deposits	9,849	11,288
Deferred revenue (billed or collected)	8,604	8,770
Current maturities of marketing obligations	369	273
Income tax payable	462	880
Deferred income taxes	450	406
Total current liabilities	100,829	109,662
Long-term warranty obligations	8,998	8,508
Long-term deferred revenue (billed or collected)	3,710	4,559
Other long-term obligations, less current maturities	1,270	2,010
Deferred income taxes	10	6
Total long-term liabilities	13,988	15,083
TOTAL LIABILITIES	114,817	124,745
SHAREHOLDERS' EQUITY:
Common stock, no par value, authorized 120,000,000 shares; 41,910,036 and 41,606,070 shares issued at January 28, 2012 and April 30, 2011, respectively	34,515	32,670
Additional paid-in capital	23,564	21,149
Retained earnings	132,335	149,291
Treasury stock, at cost, 19,680 shares	(9)	(9)
Accumulated other comprehensive income	(20)	1
TOTAL SHAREHOLDERS' EQUITY	190,385	203,102
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 305,202	$ 327,847

CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - $ / shares shares in Thousands	Jan. 28, 2012	Apr. 30, 2011
SHAREHOLDERS' EQUITY:
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	120,000,000	120,000,000
Common stock, issued (in shares)	41,910,036	41,606,070
Treasury stock, shares (in shares)	19,680	19,680

CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 28, 2012	Jan. 29, 2011	Jan. 28, 2012	Jan. 29, 2011
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 122,925	$ 99,868	$ 377,532	$ 327,289
Cost of goods sold	95,070	76,226	288,702	244,242
Gross profit	27,855	23,642	88,830	83,047
Operating expenses:
Selling expense	13,341	12,148	38,475	37,084
General and administrative	6,974	6,047	20,410	17,259
Product design and development	5,696	4,673	17,050	13,787
Total operating expenses	26,011	22,868	75,935	68,130
Operating income	1,844	774	12,895	14,917
Nonoperating income (expense):
Interest income	434	544	1,326	1,382
Interest expense	(61)	(41)	(231)	(118)
Other (expense) income, net	(29)	557	(221)	818
Income before income taxes	2,188	1,834	13,769	16,999
Income tax expense	522	3	4,775	5,718
Net income	$ 1,666	$ 1,831	$ 8,994	$ 11,281
Weighted average shares outstanding:
Basic (in shares)	41,916	41,534	41,811	41,341
Diluted (in shares)	42,076	42,201	42,175	41,969
Earnings per share:
Basic (in dollars per share)	$ 0.04	$ 0.04	$ 0.22	$ 0.27
Diluted (in dollars per share)	0.04	0.04	0.21	0.27
Cash dividend paid per share (in dollars per share)	$ 0.51	$ 0.00	$ 0.62	$ 0.60

CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jan. 28, 2012	Jan. 29, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 8,994	$ 11,281
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13,398	14,980
Amortization of premium/discount on marketable securities	140	0
Loss (gain) on sale of property and equipment	11	53
Stock-based compensation	2,474	2,595
Excess tax benefits from stock-based compensation	(30)	(106)
Equity in losses of affiliates	0	36
Provision for doubtful accounts	(125)	(10)
Deferred income taxes, net	(377)	2,172
Change in operating assets and liabilities	(16,092)	6,373
Net cash provided by operating activities	8,393	37,374
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(12,633)	(5,595)
Proceeds from sale of property and equipment	168	195
Purchases of marketable securities	(10,968)	(16,869)
Sales or maturities of marketable securities	13,925	0
Insurance recoveries on property and equipment	0	114
Other investing activities, net	0	2,095
Net cash used in investing activities	(9,508)	(20,060)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on notes payable	782	0
Proceeds from exercise of stock options	431	1,223
Excess tax benefits from stock-based compensation	30	106
Principal payments on long-term obligations	0	(14)
Dividends paid	(25,950)	(24,794)
Net cash used in financing activities	(24,707)	(23,479)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	66	111
NET DECREASE IN CASH AND CASH EQUIVALENTS	(25,756)	(6,054)
CASH AND CASH EQUIVALENTS:
Beginning of period	54,308	63,603
End of period	28,552	57,549
Cash payments for:
Interest	184	101
Income taxes, net of refunds	4,266	4,108
Supplemental schedule of non-cash investing and financing activities:
Demonstration equipment transferred to inventory	38	774
Purchase of property and equipment included in accounts payable	$ 827	$ 276

Basis of Presentation and Summary of Critical Accounting Policies	9 Months Ended
	Jan. 28, 2012
Basis of Presentation and Summary of Critical Accounting Policies [Abstract]
Basis of Presentation and Summary of Critical Accounting Policies	Note 1. Basis of Presentation and Summary of Critical Accounting Policies In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments (consisting of normal recurring adjustments) necessary to fairly present our financial position, results of operations and cash flows for the periods presented. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts therein. Due to the inherent uncertainty involved in making estimates, actual results in future periods may differ from those estimates. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted. The balance sheet at April 30, 2011 has been derived from the audited financial statements at that date, but it does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. These financial statements should be read in conjunction with our financial statements and notes thereto for the year ended April 30, 2011, which are contained in our Annual Report on Form 10-K previously filed with the Securities and Exchange Commission. The results of operations for the interim periods presented are not necessarily indicative of results that may be expected for any other interim period or for the full fiscal year. Reclassifications: Certain reclassifications were made to prior year amounts to conform to the current period presentation. We reclassified certain other assets from intangibles; computer software and hardware from office furniture and equipment; and accrued expenses from obligations for warranties. These reclassifications had no effect on shareholders' equity or net income as previously reported. Revenue Recognition On May 1, 2011, we prospectively adopted the Accounting Standard Updates (ASU) 2009-13 Multiple-Deliverable Revenue Arrangements, and ASU 2009-14, Certain Revenue Arrangements that Include Software Elements, regarding revenue recognition for multiple deliverable arrangements and arrangements that include software elements. The update requires a vendor to allocate revenue in an arrangement using its best estimate of selling price if neither vendor specific objective evidence nor third party evidence of selling price exists. The residual method of revenue allocation is no longer permissible. Our adoption of ASU 2009-13 and ASU 2009-14 did not change our units of accounting for bundled arrangements, nor did they materially change how we allocate arrangement consideration to our various products and services. Accordingly, our adoption of ASU 2009-13 and ASU 2009-14 did not have a significant impact on our consolidated financial statements. Multiple-element arrangements: We generate revenue from the sale of equipment and related services, including customization, installation and maintenance services. In some instances, we provide some or all of such equipment and services to our customers under the terms of a single multiple-element sales arrangement. These arrangements typically involve the sale of equipment bundled with some or all of these services, but may also involve instances in which we have contracted to deliver multiple pieces of equipment over time, rather than at a single point in time. When a sales arrangement involves multiple elements, the items included in the arrangement (deliverables) are evaluated pursuant to Accounting Standards Codification (ASC) 605-25, Revenue Arrangements with Multiple Deliverables, to determine whether they represent separate units of accounting. We perform this evaluation at the inception of an arrangement and as we deliver each item in the arrangement. Generally, we account for a deliverable (or a group of deliverables) separately if the delivered item(s) has standalone value to the customer and if we have given the customer a general right of return relative to the delivered item(s) and delivery or performance of the undelivered item(s) or service(s) is probable and substantially in our control. When items included in a multiple-element arrangement represent separate units of accounting, we allocate the arrangement consideration to the individual items based on their relative selling values. The amount of arrangement consideration allocated to the delivered item(s) is limited to the amount that is not contingent on us delivering additional products or services. Once we have determined the amount, if any, of arrangement consideration allocable to the delivered item(s), we apply the applicable revenue recognition policy, as described in our most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission, to determine when and by which method such amount may be recognized as revenue. We generally determine if objective and reliable evidence of selling prices for the items included in a multiple-element arrangement exists based on whether we have vendor-specific objective evidence of the price for which we sell an item on a standalone basis. If we do not have vendor-specific objective evidence for the item, we will use the price charged by a competitor selling a comparable product or service on a standalone basis to similarly situated customers, if available. If neither vendor-specific objective evidence nor third party evidence is available, we use our best estimate of the selling price for that deliverable. All other revenue recognition accounting policies are explained in note one of the Notes to Consolidated Financial Statements in our Annual Report on Form 10-K for the fiscal year ended April 30, 2011. Recently Issued Accounting Pronouncements In December 2010, the Financial Accounting Standards Board (FASB) issued ASU 2010-28, When to Perform Step 2 of the Goodwill Impairment Test for Reporting Units with Zero or Negative Carrying Amounts (Topic 350)-Intangibles-Goodwill and Other. ASU 2010-28 amends the criteria for performing Step 2 of the goodwill impairment test for reporting units with zero or negative carrying amounts and requires performing Step 2 if qualitative factors indicate that it is more likely than not that a goodwill impairment exists. ASU 2010-28 requires any impairment to be recorded upon adoption as an adjustment to our beginning retained earnings. The adoption of this update on May 1, 2011 did not have an impact on our consolidated financial statements, as we do not have any reporting units with zero or negative carrying amounts. In May 2011, the FASB issued ASU 2011-04, Amendments to Achieve Common Fair Value Measurements and Disclosure Requirements in U.S. GAAP and IFRS, which amends ASC 820, Fair Value Measurements and Disclosures. ASU 2011-04 provides a consistent definition of fair value and ensures that the fair value measurement and disclosure requirements are similar between U.S. generally accepted accounting principles and International Financial Reporting Standards. ASU 2011-04 also changes certain fair value measurement principles and enhances the disclosure requirements particularly for level 3 fair value measurements. ASU 2011-04 is effective during interim and annual periods beginning after December 15, 2011. These new standards will be effective for us beginning in the fourth quarter of fiscal 2012. As this update impacts presentation only, its adoption will not impact our consolidated financial statements. In June 2011, the FASB issued ASU 2011-05, Presentation of Comprehensive Income which is an update to ASC 220, Comprehensive Income. ASU 2011-05 requires the components of net income and the components of other comprehensive income to be presented either in a single continuous statement of comprehensive income or in two separate but continuous statements. ASU 2011-05 eliminates the option to present components of other comprehensive income as part of the statement of changes in shareholders' equity. In addition, ASU 2011-05 requires companies to present on the face of the financial statements reclassification adjustments for items that are reclassified from other comprehensive income to net income in the statement(s) where the components of net income and the components of other comprehensive income are presented. ASU 2011-05 is effective for annual periods beginning after December 15, 2011 and interim periods thereafter. On December 23, 2011, the FASB issued ASU 2011-12, which deferred the effective date for the changes that related to the presentation of reclassification adjustments and their presentation in the financial statements until further notice. As this update impacts presentation only, its adoption will not impact our consolidated financial statements. In September 2011, the FASB issued ASU 2011-08, Intangibles - Goodwill and Other (Topic 350) - Testing Goodwill for Impairment. ASU 2011-08 permits an entity to make a qualitative assessment of whether it is more likely than not that a reporting unit's fair value is less than its carrying value before applying the two-step goodwill impairment model that is currently in place. If it is determined through the qualitative assessment that a reporting unit's fair value is more likely than not greater than its carrying value, the remaining impairment steps would be unnecessary. The qualitative assessment is optional, allowing companies to go directly to the quantitative assessment. ASU 2011-08 will be effective for annual and interim goodwill impairment tests performed in fiscal years beginning after December 15, 2011, with early adoption permitted. This new standard will be effective for us beginning in fiscal year 2013. There will be no impact to the consolidated financial statement presentation, as ASU 2011-08 impacts the analysis to be performed only if needed.

Earnings Per Share EPS

9 Months Ended

Jan. 28, 2012

Earnings Per Share EPS [Abstract]

Earnings Per Share EPS

Note 2. Earnings Per Share ("EPS")

Basic EPS is computed by dividing income available to common shareholders by the weighted average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that would occur if securities or other obligations to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that would then share in our earnings.

The following is a reconciliation of the income and common share amounts used in the calculation of basic and diluted EPS for the three and nine months ended January 28, 2012 and January 29, 2011:

	Net income		Shares	Earnings Per Share
For the three months ended January 28, 2012:
Basic earnings per share	$	1,666	41,916	$	0.04
Dilution associated with stock compensation plans		-	160		-
Diluted earnings per share	$	1,666	42,076	$	0.04

For the three months ended January 29, 2011:
Basic earnings per share	$	1,831	41,534	$	0.04
Dilution associated with stock compensation plans		-	667		-
Diluted earnings per share	$	1,831	42,201	$	0.04

For the nine months ended January 28, 2012:
Basic earnings per share	$	8,994	41,811	$	0.22
Dilution associated with stock compensation plans		-	364		(0.01)
Diluted earnings per share	$	8,994	42,175	$	0.21

For the nine months ended January 29, 2011:
Basic earnings per share	$	11,281	41,341	$	0.27
Dilution associated with stock compensation plans		-	628		-
Diluted earnings per share	$	11,281	41,969	$	0.27

Options outstanding to purchase 1,621 shares of common stock with a weighted average exercise price of $19.18 for the three months ended January 28, 2012 and 773 shares of common stock with a weighted average exercise price of $25.88 for the three months ended January 29, 2011 were not included in the computation of diluted earnings per share because the effects would be anti-dilutive.

Options outstanding to purchase 1,621 shares of common stock with a weighted average exercise price of $19.18 for the nine months ended January 28, 2012 and 1,658 shares of common stock with a weighted average exercise price of $18.49 for the nine months ended January 29, 2011 were not included in the computation of diluted earnings per share because the effects would be anti-dilutive.

Goodwill

9 Months Ended

Jan. 28, 2012

Goodwill [Abstract]

Goodwill

Note 3. Goodwill

The changes in the carrying amount of goodwill related to each reportable segment for the nine months ended January 28, 2012 were as follows:

	Live Events			Commercial			Transportation			Total Goodwill
Balance as of April 30, 2011	$	2,452		$	756		$	176		$	3,384
Foreign currency translation		(26	)		(24	)		(7	)		(57	)
Balance as of January 28, 2012	$	2,426		$	732		$	169		$	3,327

We perform an analysis of goodwill on an annual basis as of the first business day of our third quarter of each year and more frequently if circumstances warrant. We performed this analysis as of October 30, 2011. The result of this analysis indicated that no goodwill impairment existed as of that date.

We face a number of risks to our business which can adversely impact cash flows in each of our business units and cause a significant decline in fair value of each business unit. This decline could lead to an impairment of goodwill to some or all of our business units. For example, events could cause an impairment in goodwill in some or all of our business units if the trend of orders and sales worsens and we are unable to respond in ways that preserve future cash flows or if our stock price declines significantly.

Inventories

9 Months Ended

Jan. 28, 2012

Inventories [Abstract]

Inventories

Note 4. Inventories

Inventories consisted of the following:

	January 28,		April 30,
	2012		2011

Raw materials	$	27,789	$	18,795
Work-in-process		5,588		8,457
Finished goods		18,602		19,637
	$	51,979	$	46,889

Segment Disclosure

9 Months Ended

Jan. 28, 2012

Segment Disclosure [Abstract]

Note 5. Segment Disclosure

We have organized our business into five business units which meet the definition of reportable segments under ASC 280-10, Segment Reporting: the Commercial segment, the Live Events segment, the Schools and Theatres segment, the Transportation segment, and the International segment.

Our Commercial segment primarily consists of sales of our video, Galaxy�, FuelightT and ValoT product lines to resellers (primarily sign companies), outdoor advertisers, national retailers, quick-serve restaurants, casinos and petroleum retailers. Our Live Events segment primarily consists of sales of integrated scoring and video display systems to college and professional sports facilities and convention centers and sales of our mobile PST display technology to video rental organizations and other live events type venues. Our Schools and Theatres segment primarily consists of sales of scoring systems, Galaxy� displays and video display systems to primary and secondary education facilities and sales of our Vortek� automated rigging systems for theatre applications. Our Transportation segment primarily consists of sales of our Vanguard� and Galaxy� product lines to governmental transportation departments, airlines and other transportation related customers. Finally, our International segment primarily consists of sales of all product lines to geographies outside the United States and Canada.

Segment reports present results through contribution margin, which is comprised of gross profit less selling costs. Segment profit excludes general and administration expense, product development expense, interest income and expense, non-operating income and income tax expense. Assets are not allocated to the segments. Depreciation and amortization, excluding that portion related to non-allocated costs, are allocated to each segment based on various financial measures. In general, segments follow the same accounting policies as those described in Note 1. Costs of domestic field sales and services infrastructure, including most field administrative staff, are allocated to the Commercial, Live Events, and Schools and Theatres segments based on cost of sales. Shared manufacturing, building and utilities and procurement costs are allocated based on payroll dollars, square footage and various other financial measures.

We do not maintain information on sales by products and, therefore, disclosure of such information is not practical.

The following table sets forth certain financial information for each of our five operating segments for the periods indicated:

	Three Months Ended						Nine Months Ended
	January 28,			January 29,			January 28,			January 28,
	2012			2011			2012			2011

Net sales:
Commercial	$	38,833		$	28,750		$	115,239		$	83,760
Live Events		38,496			36,138			123,676			120,846
Schools & Theatres		10,696			11,672			46,418			49,671
Transportation		10,261			11,063			34,201			30,091
International		24,639			12,245			57,998			42,921
	$	122,925		$	99,868		$	377,532		$	327,289

Contribution margin:
Commercial	$	6,834		$	3,423		$	18,820		$	10,272
Live Events		2,643			2,837			12,073			14,183
Schools & Theatres		(830	)		734			3,979			7,244
Transportation		2,080			2,199			8,219			6,676
International		3,787			2,301			7,264			7,588
		14,514			11,494			50,355			45,963

Non-allocated operating expenses:
General and administrative		6,974			6,047			20,410			17,259
Product design and development		5,696			4,673			17,050			13,787
Operating income		1,844			774			12,895			14,917

Nonoperating income (expense):
Interest income		434			544			1,326			1,382
Interest expense		(61	)		(41	)		(231	)		(118	)
Other income (expense), net		(29	)		557			(221	)		818

Income before income taxes		2,188			1,834			13,769			16,999
Income tax expense		522			3			4,775			5,718
Net income	$	1,666		$	1,831		$	8,994		$	11,281

Depreciation and amortization:
Commercial	$	1,524		$	1,743		$	4,721		$	5,104
Live Events		1,260			1,614			3,826			4,790
Schools & Theatres		591			658			1,807			2,001
Transportation		337			391			1,043			1,102
International		164			210			494			656
Unallocated corporate depreciation		511			435			1,507			1,327
	$	4,387		$	5,051		$	13,398		$	14,980

No single geographic area comprises a material amount of net sales or long-lived assets other than the United States. The following table presents information about us in the United States and elsewhere:

	United States		Outside U.S.		Total
Net sales for three months ended:
January 28, 2012	$	94,537	$	28,388	$	122,925
January 29, 2011		83,668		16,200		99,868

Net sales for nine months ended:
January 28, 2012	$	310,266	$	67,266	$	377,532
January 29, 2011		275,429		51,860		327,289

Long-lived assets at:
January 28, 2012	$	66,938	$	2,084	$	69,022
April 30, 2011		68,034		1,832		69,866

We are not economically dependent on a limited number of customers for the sale of our products and services because we have numerous customers world-wide. We are not economically dependent on a limited number of suppliers for our inventory items because we have numerous suppliers world-wide.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8538-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 29
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-Name Accounting Standards Codification
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+ Details

Comprehensive Income

9 Months Ended

Jan. 28, 2012

Comprehensive Income [Abstract]

Comprehensive Income

Note 6. Comprehensive Income

We follow the provisions of ASC 220, Reporting Comprehensive Income, which establishes standards for reporting and displaying comprehensive income and its components. Comprehensive income reflects the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. For us, comprehensive income represents net income adjusted for foreign currency translation adjustments. For the first nine months of fiscal 2012 and 2011, no gains or losses on available for sale securities were recognized in earnings. Therefore, no reclassification adjustment has been recorded in both periods. The foreign currency translation adjustment included in comprehensive income has not been tax affected, as the investments in foreign affiliates are deemed to be permanent. In accordance with ASC 220, we have chosen to disclose comprehensive income in the consolidated statement of shareholders' equity on an annual basis.

A summary of comprehensive income is as follows:

	Nine Months Ended
	January 28,			January 29,
	2012			2011
Net income	$	8,994		$	11,281
Net foreign currency translation (loss) gain adjustment		(89	)		181
Unrealized gain (loss) on available for sale securities, net of taxes of ($23) and $1, repectively		45			(2	)
Total comprehensive income	$	8,950		$	11,460

- Definition

The entire disclosure for comprehensive income. Includes, but is not limited to, the following: 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. Components of comprehensive income include: (1) foreign currency translation adjustments; (2) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (3) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (4) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (5) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (6) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (7) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 14-26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e637-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e681-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

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-Name Accounting Standards Codification
-Topic 220
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-URI http://asc.fasb.org/extlink&oid=6920433&loc=d3e998-108581

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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e689-108580

+ Details

Commitments and Contingencies

9 Months Ended

Jan. 28, 2012

Commitments and Contingencies [Abstract]

Commitments and Contingencies

Note 7. Commitments and Contingencies

Litigation: We are involved in various claims and legal actions arising in the ordinary course of business. In the opinion of management, based upon consultation with legal counsel, the ultimate disposition of these matters, individually or as a whole, will not have a material adverse effect on our consolidated financial statements.

Guarantees: In connection with the sale of equipment to various financial institutions, we have entered into contractual arrangements whereby we agreed to repurchase equipment at the end of the lease term at a fixed price. Our total obligations under these fixed price arrangements were $1,285 as of January 28, 2012 and April 30, 2011. We have recognized a guarantee liability in accrued expenses for the amount of $200, inaccordance with the provisions of ASC 460, Guarantees, in connection with these arrangements.

Warranties: We offer a standard parts coverage warranty for periods varying from one to five years for all of our products. We also offer additional types of warranties that include on-site labor, routine maintenance and event support. In addition, the terms of warranties on some installations can vary from one to 10 years. The specific terms and conditions of these warranties vary primarily depending on the type of the product sold. We estimate the costs that may be incurred under the warranty obligations and record a liability in the amount of such estimated costs at the time the revenue is recognized. Factors that affect our estimate of the cost of our warranty obligations include historical experience and expectations of future conditions. We periodically assess the adequacy of our recorded warranty reserves and, to the extent that we experience any changes in warranty claim activity or costs associated with servicing those claims, our warranty obligation is adjusted accordingly.

Changes in our warranty liability for the nine months ended January 28, 2012 consisted of the following:

	Amount
Beginning accrued warranty costs	$	22,982
Warranties issued during the period		6,705
Settlements made during the period		(9,858	)
Changes in accrued warranty costs for pre-existing warranties during the period, including expirations		3,264
Ending accrued warranty costs	$	23,093

Performance guarantees: We have entered into standby letter of credit agreements, bank guarantees and surety bonds with financial institutions relating to the guarantee of future performance on contracts, primarily construction type contracts. As of January 28, 2012, we had outstanding letters of credit agreements and surety bonds in the amount of $2,949 and $38,939, respectively. Performance guarantees are issued to certain customers to guarantee the operation and installation of the equipment and our ability to complete a contract. These performance guarantees have various terms, which are generally less than one year.

Leases: We lease office space for various sales and service locations throughout the world, including manufacturing space in the United States and China and various equipment, primarily office equipment. Some of these leases, including the lease for manufacturing facilities in Sioux Falls, South Dakota, include provisions for extensions or purchase. The lease for the facilities in Sioux Falls, South Dakota can be extended for an additional three years past its current term, which ends December 31, 2016, and it contains an option to purchase the property subject to the lease from January 1, 2015 to December 31, 2016 for $8,400. If the lease is extended, the purchase option increases to $8,600 for the year ending December 31, 2017 and $8,800 for the year ending December 31, 2018. Rental expense for operating leases was $2,452 and $2,632 for the nine months ended January 28, 2012 and January 29, 2011, respectively. Future minimum payments under noncancelable operating leases, excluding executory costs such as management and maintenance fees, with initial or remaining terms of one year or more consisted of the following at January 28, 2012:

Fiscal years ending	Amount
2012	$	866
2013		2,876
2014		2,100
2015		1,649
2016		1,589
Thereafter		877
Total	$	9,957

Purchase commitments: From time to time, we commit to purchase inventory, advertising and various other products and services over periods that extend beyond a year. As of January 28, 2012, we were obligated under the following conditional and unconditional purchase commitments, which included $1,000 in conditional purchase commitments.

Fiscal years ending	Amount
2012	$	178
2013		1,314
2014		1,003
2015		211
2016		200
Thereafter		400
Total	$	3,306

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 4
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

+ Details

Income Taxes	9 Months Ended
Income Taxes	Jan. 28, 2012
Income Taxes [Abstract]
Income Taxes	Note 8. Income Taxes As of January 28, 2012, we had approximately $360 of unrecognized tax benefits that would affect our effective tax rate if recognized. We recognize interest and penalties related to income tax matters in income tax expense. We do not expect our unrecognized tax benefits to change significantly over the next 12 months. We are subject to U.S. Federal income tax as well as income taxes of multiple state jurisdictions. As a result of the completion of exams by the Internal Revenue Service on prior years and the expiration of statutes of limitations, fiscal years 2009, 2010 and 2011 are the only years remaining open under applicable statutes of limitations. Certain subsidiaries are also subject to income tax in foreign jurisdictions which have open tax years varying by jurisdiction extending back to 2004. We operate under a tax holiday in China that will expire in fiscal 2012. At this time, we are unable to predict how the expiration of the tax holiday will impact us in the future. During the third quarter of fiscal 2011, the President signed into law a reinstatement of the research and development tax credit, retroactively to January 1, 2010. As a result, we recognized in the third quarter of fiscal 2011 approximately $686 in benefits for the credit for the ten months preceding the third quarter of fiscal 2011.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
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-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

+ Details

Fair Value Measurement

9 Months Ended

Jan. 28, 2012

Fair Value Measurement [Abstract]

Fair Value Measurement

Note 9. Fair Value Measurement

ASC 820, Fair Value Measurements and Disclosures, defines fair value as the price that would be received to sell an asset or paid to transfer the liability (an exit price) in an orderly transaction between market participants. It also establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The fair value hierarchy within ASC 820 distinguishes between three levels of inputs that may be utilized when measuring fair value, consisting of level 1 inputs (using quoted prices in active markets for identical assets or liabilities); level 2 inputs (using inputs other than level 1 prices, such as quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability); and level 3 inputs (unobservable inputs supported by little or no market activity based on our own assumptions used to measure assets and liabilities). A financial asset's or liability's classification within this hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

The fair values for fixed-rate contracts receivable are estimated using discounted cash flow analyses based on interest rates currently being offered for contracts with similar terms to customers with similar credit quality. The carrying amounts reported on our consolidated balance sheets for contracts receivable approximate fair value. The carrying amounts reported for variable rate long-term marketing obligations approximate fair value. Fair values for fixed-rate long-term marketing obligations are estimated using a discounted cash flow calculation that applies interest rates currently being offered for debt with similar terms and underlying collateral. The total carrying value of long-term marketing obligations reported on our consolidated balance sheets approximates fair value.

The following table sets forth by level within the fair value hierarchy our financial assets that were accounted for at fair value on a recurring basis at January 28, 2012 and April 30, 2011 according to the valuation techniques we used to determine their fair values. There have been no transfers of assets among the fair value hierarchies presented.

	Fair Value Measurements
	Level 1		Level 2			Level 3		Total
Balance as of January 28, 2012:
Cash and cash equivalents	$	28,552	$	-		$	-	$	28,552
Restricted cash		2,109		-			-		2,109
Available-for-sale securities:
Certificates of deposit		-		5,433			-		5,433
U.S. Treasury Bills		-		-			-		-
U.S. Government sponsored entities		-		11,088			-		11,088
Municipal Bonds		-		3,395			-		3,395
Total assets measured at fair value	$	30,661	$	19,916		$	-	$	50,577
Liabilities:
Derivatives - currency forward contracts	$	-	$	(99	)	$	-	$	(99	)

Balance as of April 30, 2011:
Cash and cash equivalents	$	54,308	$	-		$	-	$	54,308
Restricted cash		1,546		-			-		1,546
Available-for-sale securities:
Certificates of deposit		-		4,913			-		4,913
U.S. Treasury Bills		1,999		-			-		1,999
U.S. Government sponsored entities		-		13,617			-		13,617
Municipal Bonds		-		2,414			-		2,414
Total assets measured at fair value	$	57,853	$	20,944		$	-	$	78,797
Liabilities:
Derivatives - currency forward contracts	$	-	$	(258	)	$	-	$	(258	)

The following methods and assumptions were used to estimate the fair value of each class of financial instrument. There have been no changes in the valuation techniques used by us to value our financial instruments.

Cash and cash equivalents. Consists of cash on hand in bank deposits and highly liquid investments, primarily money market accounts. The fair value was measured using quoted market prices in active markets and is classified as Level 1. The carrying amount approximates fair value.

Restricted cash. Consists of cash and cash equivalents that are held in bank deposit accounts to secure issuances of foreign bank guarantees. The fair value of cash equivalents was measured using quoted market prices in active markets and is classified as Level 1. The carrying amount approximates fair value and is classified as Level 1.

Certificates of deposit. Consists of time deposit accounts with original maturities of less than three years and various yields. The fair value of these securities was measured based on valuations from a third party financial institution and is classified as Level 2. The carrying amount approximates fair value and is classified as Level 2.

U.S. Treasury Bills. Consists of U.S. Government treasury bills with original maturities of less than three years and various yields. The fair value of these securities was measured using quoted market prices in active markets and is classified as Level 1.

U.S. Government sponsored entities. Consist of Fannie Mae and Federal Home Loan Bank investment grade debt securities that trade with sufficient frequency and volume to enable us to obtain pricing information on an ongoing basis. The fair value of these securities was measured based on valuations from a third party financial institution and is classified as Level 2. The contractual maturities of these investments vary from one month to three years.

Municipal obligations. Consist of investment grade municipal bonds that trade with sufficient frequency and volume to enable us to obtain pricing information on an ongoing basis. The contractual maturities of these investments vary from two to three years. The fair value of these bonds was measured based on valuations from a third party financial institution and is classified as Level 2.

Derivatives - currency forward contracts. Consists of currency forward contracts that trade with sufficient frequency and volume to enable us to obtain pricing information on an ongoing basis. The fair value of these securities was measured based on valuation from a third party bank and is classified as Level 2. Refer to Note 12, Derivative Financial Instruments, for more information regarding our derivatives.

The fair value measurement standard also applies to certain nonfinancial assets and liabilities that are measured at fair value on a nonrecurring basis. For example, certain long-lived assets such as goodwill, intangible assets and property, plant and equipment are measured at fair value in connection with business combinations or when an impairment is recognized and the related assets are written down to fair value. We did not enter into any material business combinations during the first nine months of fiscal 2012 or in fiscal 2011. No material impairments of our long-lived assets were recognized during the first nine months of fiscal 2012 or in fiscal 2011.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15C, 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A
-Subparagraph a-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15B
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32, 33, 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 17-22, 27, 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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-Name Accounting Standards Codification
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+ Details

Marketable Securities

9 Months Ended

Jan. 28, 2012

Marketable Securities [Abstract]

Marketable Securities

Note 10. Marketable Securities

We have a cash management program which provides for the investment of cash balances not used in current operations. We classify our investments in marketable securities as available-for-sale in accordance with the provisions of ASU 320, Investments - Debt and Equity Securities. Marketable securities classified as available-for-sale are reported at fair value with unrealized gains or losses, net of tax, reported in other comprehensive income. Unrealized losses considered to be "other-than-temporary" are recognized currently in earnings. The cost of securities sold is based on the specific identification method. Where quoted market prices are not available, we use the market price of similar types of securities that are traded in the market to estimate fair value. As of January 28, 2012 and April 30, 2011, our available-for-sale securities consisted of the following:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Balance as of January 28, 2012
Certificates of deposit	$	5,433	$	-	$	-	$	5,433
U.S. Treasury bills		-		-		-		-
U.S. Government sponsored entities		11,021		67		-		11,088
Municipal bonds		3,371		24		-		3,395
Total	$	19,825	$	91	$	-	$	19,916

Balance as of April 30, 2011
Certificates of deposit	$	4,913	$	-	$	-	$	4,913
U.S. Treasury bills		1,998		1		-		1,999
U.S. Government sponsored entities		13,598		19		-		13,617
Municipal bonds		2,412		2		-		2,414
Total	$	22,921	$	22	$	-	$	22,943

All available-for-sale securities are classified as current assets, as they are readily available to support our current operating needs. The contractual maturities of available-for-sale debt securities as of January 28, 2012 were as follows:

	Less than 12 months		Greater than 12 months		Total
Certificates of deposit	$	3,951	$	1,482	$	5,433
U.S. Treasury bills		-		-		-
U.S. Government sponsored agencies		5,037		6,051		11,088
Municipal obligations		768		2,627		3,395
Total available-for-sale	$	9,756	$	10,160	$	19,916

- Definition

Tabular disclosure of investments in certain debt and equity securities (and certain other trading assets) which include all debt and equity securities (other than those equity securities accounted for under the equity or cost methods of accounting) with readily determinable fair values. Other trading assets include assets that are carried on the balance sheet at fair value and held for trading purposes. A debt security represents a creditor relationship with an enterprise that is in the form of a security. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities (and other trading assets).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 3, 19, 20, 21, 22, 137
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+ Details

Receivables	9 Months Ended
Receivables	Jan. 28, 2012
Receivables [Abstract]
Receivables	Note 11. Receivables We sell our products throughout the United States and certain foreign countries on credit terms that we establish for each customer. On the sale of certain products, we have the ability to file a contractor's lien against the product installed as collateral. Foreign sales are at times secured by irrevocable letters of credit or bank guarantees. Accounts receivable are reported net of an allowance for doubtful accounts of $2,422 and $2,548 at January 28, 2012 and April 30, 2011, respectively. We make estimates regarding the collectability of our accounts receivable, long-term receivables, costs and estimated earnings in excess of billings and other receivables. In evaluating the adequacy of our allowance for doubtful accounts, we analyze specific balances, customer creditworthiness, changes in customer payment cycles, and current economic trends. If the financial condition of any customer was to deteriorate, resulting in an impairment of its ability to make payments, additional allowances may be required. We charge off receivables at such time as it is determined that collection will not occur. Charge offs of receivables and our allowance for doubtful accounts related to financing receivables are not material to our financial results. In connection with certain sales transactions, we have entered into sales contracts with installment payments exceeding six months and sales type leases. The present value of these contracts and leases is recorded as a receivable upon the installation and acceptance of the equipment, and profit is recognized to the extent that the present value is in excess of cost. We generally retain a security interest in the equipment or in the cash flow generated by the equipment until the contract is paid. The present values of long-term contract and lease receivables, including accrued interest and current maturities, were $18,980 and $18,901 as of January 28, 2012 and April 30, 2011, respectively. Contract and lease receivables bearing annual interest rates of 6.0% to 12.0% are due in varying annual installments through July 2020. The face amount of long-term receivables was $22,296 and $22,807 as of January 28, 2012 and April 30, 2011, respectively. Included in accounts receivable as of January 28, 2012 and April 30, 2011 was $121 and $31, respectively, of retainage on construction-type contracts, all of which is expected to be collected in one year.

Derivative Financial Instruments

9 Months Ended

Jan. 28, 2012

Derivative Financial Instruments [Abstract]

Derivative Financial Instruments

Note 12. Derivative Financial Instruments

We utilize derivative financial instruments to manage the economic impact of fluctuations in currency exchange rates on those transactions that are denominated in currencies other than our functional currency, which is the U.S. dollar. We enter into currency forward contracts to manage these economic risks. We account for all derivatives on the balance sheet as an asset or liability measured at fair value, and changes in fair values are recognized in earnings unless specific hedge accounting criteria are met for cash flow or net investment hedges. If such hedge accounting criteria are met, the change is deferred in shareholders' equity as a component of accumulated other comprehensive income. The deferred items are recognized in the statement of operations in the period the derivative contract is settled. As of January 28, 2012 and April 30, 2011, we had not designated any of our derivative instruments as accounting hedges, and, thus recorded the changes in fair value in the other income/expense.

The foreign currency exchange contracts in aggregated notional amounts in place to exchange United States Dollars at January 28, 2012 and April 30, 2011 were as follows:

	January 28, 2012				April 30, 2011
	U.S. Dollars		Foreign Currency		U.S. Dollars	Foreign Currency
Foreign Currency Exchange Forward Contracts:
U.S. Dollars/Australian Dollars		2,022		2,006	1,302		1,320
U.S. Dollars/Polish Zloty		-		-	803		2,390
U.S. Dollars/Singapore Dollar		506		649	-		-

As of January 28, 2012, the fair value of foreign currency exchange forward contracts, using Level 2 inputs from a third party bank, represented liabilities of $99 compared to liabilities of $258 as of April 30, 2011. Changes in the fair value of the foreign currency exchange contracts are reflected in other income.

- Definition

The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

+ References

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-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 45
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+ Details