Note 7 - Business Combination, Goodwill and Intangible Assets - Amortization Expense of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Intangible asset amortization expense	$ 9,853	$ 9,308	$ 9,340
Cost of Sales [Member]
Intangible asset amortization expense	7,267	7,586	7,922
Operating Expense [Member]
Intangible asset amortization expense	$ 2,586	$ 1,722	$ 1,418