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CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 25, 2014	Jan. 26, 2013	Jan. 25, 2014	Jan. 26, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 2,871	$ 2,710	$ 20,380	$ 20,935
Other comprehensive loss:
Cumulative translation adjustments	(335)	(5)	(12)	(13)
Unrealized gain (loss) on available-for-sale securities, net of tax	7	(13)	(13)	(51)
Total other comprehensive loss, net of tax	(328)	(18)	(25)	(64)
Comprehensive income	$ 2,543	$ 2,692	$ 20,355	$ 20,871

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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