CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Consolidated Statements of Comprehensive (Loss) Income
Net (loss) income	$ (4,172)	$ 4,419	$ (15,814)	$ (2,562)
Other comprehensive income:
Unrealized gain on investments, net of deferred tax expense of $17 and $17 for the three months ended October 29, 2016 and October 31, 2015, respectively; and net of deferred tax expense of $29 and $18 for the six months ended October 29, 2016 and October 31, 2015, respectively	25	25	43	27
Total comprehensive (loss) income	$ (4,147)	$ 4,444	$ (15,771)	$ (2,535)