Note 5 - Accrued Rebate Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Oct. 31, 2015	Nov. 01, 2014
Beginning balance	$ 4,918	$ 3,903	$ 9,599	$ 3,587
Charged as a reduction of revenue	$ 2,596	$ 6,399	9,147	$ 12,463
Reversal of unclaimed rebates			(1,028)
Payments	$ (5,227)	$ (3,526)	(15,431)	$ (9,274)
Ending balance	$ 2,287	$ 6,776	$ 2,287	$ 6,776