Consolidated Statements of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (1,730)	$ (3,830)	$ (13,803)
Other comprehensive income (loss) :
Pension adjustments, net of tax	2,006	(658)	(5,586)
Comprehensive income (loss)	$ 276	$ (4,488)	$ (19,389)