Note 18 - Equity Incentive Plans and Employee Benefits (Details) - Stock Options by Exercise Prices Range (USD $)	12 Months Ended
	Feb. 01, 2014
Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding Range of Exercise Prices Per Share Lower	$ 0.92
Options Outstanding Range of Exercise Prices Per Share Upper	$ 4.98
Options Outstanding Number of Shares Outstanding (in Shares)	667,796
Options Outstanding Weighted Average Remaining Life	6 years 288 days
Options Outstanding Weighted Average Exercise Price Per Share	$ 5.37
Options Exercisable Number of Shares Exercisable (in Shares)	9,373
Options Exercisable Weighted Average Exercise Price Per Share	$ 1.12
Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding Range of Exercise Prices Per Share Lower	$ 5.43
Options Outstanding Range of Exercise Prices Per Share Upper	$ 7.86
Options Outstanding Number of Shares Outstanding (in Shares)	387,434
Options Outstanding Weighted Average Remaining Life	6 years 251 days
Options Outstanding Weighted Average Exercise Price Per Share	$ 6.12
Options Exercisable Number of Shares Exercisable (in Shares)	207,888
Options Exercisable Weighted Average Exercise Price Per Share	$ 6.19
Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding Range of Exercise Prices Per Share Lower	$ 7.89
Options Outstanding Range of Exercise Prices Per Share Upper	$ 10.59
Options Outstanding Number of Shares Outstanding (in Shares)	678,722
Options Outstanding Weighted Average Remaining Life	4 years 189 days
Options Outstanding Weighted Average Exercise Price Per Share	$ 9.86
Options Exercisable Number of Shares Exercisable (in Shares)	590,823
Options Exercisable Weighted Average Exercise Price Per Share	$ 9.76
Range Four [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding Range of Exercise Prices Per Share Lower	$ 10.87
Options Outstanding Range of Exercise Prices Per Share Upper	$ 10.87
Options Outstanding Number of Shares Outstanding (in Shares)	356,500
Options Outstanding Weighted Average Remaining Life	4 years 193 days
Options Outstanding Weighted Average Exercise Price Per Share	$ 10.87
Options Exercisable Number of Shares Exercisable (in Shares)	356,400
Options Exercisable Weighted Average Exercise Price Per Share	$ 10.87
Range Five [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding Range of Exercise Prices Per Share Lower	$ 11.06
Options Outstanding Range of Exercise Prices Per Share Upper	$ 11.06
Options Outstanding Number of Shares Outstanding (in Shares)	386,447
Options Outstanding Weighted Average Remaining Life	2 years 167 days
Options Outstanding Weighted Average Exercise Price Per Share	$ 11.06
Options Exercisable Number of Shares Exercisable (in Shares)	386,447
Options Exercisable Weighted Average Exercise Price Per Share	$ 11.06
Range Six [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding Range of Exercise Prices Per Share Lower	$ 11.07
Options Outstanding Range of Exercise Prices Per Share Upper	$ 11.09
Options Outstanding Number of Shares Outstanding (in Shares)	570,884
Options Outstanding Weighted Average Remaining Life	5 years 73 days
Options Outstanding Weighted Average Exercise Price Per Share	$ 11.08
Options Exercisable Number of Shares Exercisable (in Shares)	501,325
Options Exercisable Weighted Average Exercise Price Per Share	$ 11.08
Range Seven [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding Range of Exercise Prices Per Share Lower	$ 11.40
Options Outstanding Range of Exercise Prices Per Share Upper	$ 12.02
Options Outstanding Number of Shares Outstanding (in Shares)	392,070
Options Outstanding Weighted Average Remaining Life	3 years 361 days
Options Outstanding Weighted Average Exercise Price Per Share	$ 11.60
Options Exercisable Number of Shares Exercisable (in Shares)	326,062
Options Exercisable Weighted Average Exercise Price Per Share	$ 11.56
Range Eight [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding Range of Exercise Prices Per Share Lower	$ 12.08
Options Outstanding Range of Exercise Prices Per Share Upper	$ 15.91
Options Outstanding Number of Shares Outstanding (in Shares)	419,793
Options Outstanding Weighted Average Remaining Life	3 years 175 days
Options Outstanding Weighted Average Exercise Price Per Share	$ 14.25
Options Exercisable Number of Shares Exercisable (in Shares)	377,627
Options Exercisable Weighted Average Exercise Price Per Share	$ 14.23
Range Nine [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding Range of Exercise Prices Per Share Lower	$ 16.25
Options Outstanding Range of Exercise Prices Per Share Upper	$ 41.58
Options Outstanding Number of Shares Outstanding (in Shares)	184,975
Options Outstanding Weighted Average Remaining Life	3 years 292 days
Options Outstanding Weighted Average Exercise Price Per Share	$ 32.82
Options Exercisable Number of Shares Exercisable (in Shares)	183,708
Options Exercisable Weighted Average Exercise Price Per Share	$ 32.93
Range Ten [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding Range of Exercise Prices Per Share Lower	$ 45.83
Options Outstanding Range of Exercise Prices Per Share Upper	$ 45.83
Options Outstanding Number of Shares Outstanding (in Shares)	50,000
Options Outstanding Weighted Average Remaining Life	3 years 277 days
Options Outstanding Weighted Average Exercise Price Per Share	$ 45.83
Options Exercisable Number of Shares Exercisable (in Shares)	50,000
Options Exercisable Weighted Average Exercise Price Per Share	$ 45.83
Range Eleven [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding Number of Shares Outstanding (in Shares)	4,094,621
Options Outstanding Weighted Average Remaining Life	4 years 292 days
Options Outstanding Weighted Average Exercise Price Per Share	$ 11.24
Options Exercisable Number of Shares Exercisable (in Shares)	2,989,653
Options Exercisable Weighted Average Exercise Price Per Share	$ 12.79