Note 11. Restructuring costs (Detail) - Summary of Restructuring Costs, Outstanding Payable Balance and Cumulative Restructuring Costs (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	May 04, 2013	Feb. 02, 2013
Charges	$ 210
Employee Severance [Member]
Charges	250	2,167
Cash payments	(882)	(1,153)
Balance	382	1,014
Impairment of Long-Lived Assets [Member]
Charges		1,089
Non-cash items		(1,089)
Facility Closing [Member]
Charges		8
Cash payments	(5)
Balance	3	8
Total Restructuring Charges [Member]
Charges	250	3,264
Cash payments	(887)	(1,153)
Non-cash items		(1,089)
Balance	385	1,022
Cumulative Restructuring Costs [Member]
Charges	250	3,264
Balance	$ 3,514	$ 3,264