Consolidated Statements of Comprehensive (Loss) Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (709)	$ 763	$ 14,138
Other comprehensive income (loss):
Foreign currency translation adjustments	56	37	(111)
Total other comprehensive income (loss)	56	37	(111)
Comprehensive (loss) income	$ (653)	$ 800	$ 14,027