Note 13 - Income Taxes - Reconciliation of Income Tax Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Computed at federal statutory rate of 35%	$ (4,084)	$ 2,572	$ (5,848)
State taxes provision, net of federal benefit	72	29	47
Uncertain tax positions	4,401	3,778	(347)
Difference between statutory rate and foreign effective tax rate	1,399	(1,474)	12,252
Stock-based compensation expense	423	(17)	819
Change in federal valuation allowance	5,542	4,098	(835)
Tax credits	(1,171)	(1,708)	(1,563)
Other	65	(87)	468
Provision for income taxes	$ 6,647	$ 7,191	$ 4,993