Note 11. Restructuring costs (Detail) (USD $)	3 Months Ended
	May 04, 2013
Restructuring and Related Cost, Incurred Cost	$ 3,300,000
Restructuring and Related Cost, Number of Positions Eliminated	17
Operating Leases, Future Minimum Payments Due	12,946,000
Early Termination [Member]
Potential Early Termination Fees	300,000
Monthly Lease Payments	45,000
Operating Leases, Future Minimum Payments Due	1,100,000
Cost of Sales [Member]
Restructuring and Related Cost, Incurred Cost	40,000
Operating Expense [Member]
Restructuring and Related Cost, Incurred Cost	$ 210,000