Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Oct. 31, 2015	Nov. 01, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (5,472)	$ (6,281)	$ (7,025)	$ (13,849)
Other comprehensive income (loss) before taxes:
Foreign currency translation	(32)	(144)	30	(37)
Pension plan	256	147	769	424
Other comprehensive income (loss) before taxes	224	3	799	387
Other comprehensive income (loss), net of tax	224	3	799	387
Comprehensive loss	$ (5,248)	$ (6,278)	$ (6,226)	$ (13,462)