Note 17. Equity Incentive Plans and Employee Benefits (Detail) - Stock Option Activities and Balances of Stock Option Plans (USD $)	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011	Jan. 30, 2010
Number of Shares Outstanding	5,846,027	6,084,125		5,745,795
Weighted Average Exercise Price per Share (in Dollars per share)	$ 12.47	$ 12.26		$ 11.96
Weighted Average Remaining Contractual Term	4 years 328 days	6 years 73 days	6 years 328 days	7 years 146 days
Aggregate Intrinsic Value (in Dollars)	$ 272,117
Number of Shares Outstanding	205,000	532,800	1,161,350
Weighted Average Exercise Price per Share (in Dollars per share)	$ 5.77	$ 10.22	$ 11.14
Number of Shares Outstanding	(848,930)	(479,119)	(356,305)
Weighted Average Exercise Price per Share (in Dollars per share)	$ 12.35	$ 11.87	$ 12.90
Number of Shares Outstanding	(146,310)	(291,779)	(466,715)
Weighted Average Exercise Price per Share (in Dollars per share)	$ 2.60	$ 5.14	$ 5.20
Ending vested and expected to vest	5,005,958
Ending vested and expected to vest (in Dollars per share)	$ 12.54
Ending vested and expected to vest	4 years 328 days
Ending vested and expected to vest (in Dollars)	256,991
Ending exercisable	3,790,842
Ending exercisable (in Dollars per share)	$ 13.31
Ending exercisable	4 years 73 days
Ending exercisable (in Dollars)	$ 174,904
Number of Shares Outstanding	5,055,787	5,846,027	6,084,125
Weighted Average Exercise Price per Share (in Dollars per share)	$ 12.50	$ 12.47	$ 12.26
Weighted Average Remaining Contractual Term	4 years 328 days	6 years 73 days	6 years 328 days	7 years 146 days