CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
Jul. 31, 2016	Aug. 02, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 5,313	$ 4,701
Other comprehensive income (loss)
Unrealized holding gains (losses) on investments	84	(89)
Reclassification adjustment for realized loss included in net income	12
Total other comprehensive income (loss)	96	(89)
Comprehensive income	$ 5,409	$ 4,612

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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