Note 6 - Business Combinations (Details Textual) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
	Nov. 04, 2015	Jul. 30, 2016	Jul. 30, 2016
Bretelon, Inc. [Member]
Business Combination, Consideration Transferred	$ 15.7
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	$ 2.7
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		$ 1.8	$ 2.0