Note 5 - Intangible Assets - Amortization Expense of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Intangible asset amortization expense	$ 1,568	$ 2,688	$ 3,188	$ 5,458
Cost of Sales [Member]
Intangible asset amortization expense	1,120	1,975	2,293	4,028
Operating Expense [Member]
Intangible asset amortization expense	$ 448	$ 713	$ 895	$ 1,430