Note 15 - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	May 02, 2020	Feb. 01, 2020	May 04, 2019
Cash equivalents – money market funds	$ 146,009	$ 18,001	$ 4,500
Non-qualified deferred compensation plan assets	7,435	8,004	7,865
Non-qualified deferred compensation plan liabilities	(7,435)	(8,004)	(7,865)
Deferred compensation plan liabilities for non-employee directors	(818)	(1,536)	(2,173)
Restricted stock units for non-employee directors	(1,093)	(2,572)	(4,013)
Mandatory purchase obligation - Blowfish Malibu	(18,433)	(15,200)	(9,353)
Derivative financial instruments, net		(103)	(276)
Fair Value, Inputs, Level 1 [Member]
Cash equivalents – money market funds	146,009	18,001	4,500
Non-qualified deferred compensation plan assets	7,435	8,004	7,865
Non-qualified deferred compensation plan liabilities	(7,435)	(8,004)	(7,865)
Deferred compensation plan liabilities for non-employee directors	(818)	(1,536)	(2,173)
Restricted stock units for non-employee directors	(1,093)	(2,572)	(4,013)
Mandatory purchase obligation - Blowfish Malibu	0	0	0
Derivative financial instruments, net		0	0
Fair Value, Inputs, Level 2 [Member]
Cash equivalents – money market funds	0	0	0
Non-qualified deferred compensation plan assets	0	0	0
Non-qualified deferred compensation plan liabilities	0	0	0
Deferred compensation plan liabilities for non-employee directors	0	0	0
Restricted stock units for non-employee directors	0	0	0
Mandatory purchase obligation - Blowfish Malibu	0	0	0
Derivative financial instruments, net		(103)	(276)
Fair Value, Inputs, Level 3 [Member]
Cash equivalents – money market funds	0	0	0
Non-qualified deferred compensation plan assets	0	0	0
Non-qualified deferred compensation plan liabilities	0	0	0
Deferred compensation plan liabilities for non-employee directors	0	0	0
Restricted stock units for non-employee directors	0	0	0
Mandatory purchase obligation - Blowfish Malibu	$ (18,433)	(15,200)	(9,353)
Derivative financial instruments, net		$ 0	$ 0