Note 7 - Amortization Expense of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	May. 02, 2015
Cost of Sales [Member]
Intangible asset amortization expense	$ 2,053	$ 2,006
Operating Expense [Member]
Intangible asset amortization expense	717	353
Intangible asset amortization expense	$ 2,770	$ 2,359