Note 10 - Condensed Consolidated Statement of Shareholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	May. 02, 2015
Common Stock [Member]
Balance (in shares)	41,424,377
Balance	$ 503,809
Unrealized gain on marketable securities
Currency translation adjustments
Stock-based compensation expense	$ 1,892
Tax effect related to share awards	$ (264)
Net proceeds from common stock issued under share plans (in shares)	219,859
Net proceeds from common stock issued under share plans	$ 136
Net loss
Balance (in shares)	41,644,236
Balance	$ 505,573
Treasury Stock [Member]
Balance (in shares)	(4,675,749)
Balance	$ (88,336)
Unrealized gain on marketable securities
Currency translation adjustments
Stock-based compensation expense
Tax effect related to share awards
Net proceeds from common stock issued under share plans (in shares)
Net proceeds from common stock issued under share plans
Net loss
Balance (in shares)	(4,675,749)
Balance	$ (88,336)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance	(208)
Unrealized gain on marketable securities	$ 21
Currency translation adjustments
Stock-based compensation expense
Tax effect related to share awards
Net proceeds from common stock issued under share plans
Net loss
Balance	$ (187)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	$ (1,667)
Unrealized gain on marketable securities
Currency translation adjustments	$ 580
Stock-based compensation expense
Tax effect related to share awards
Net proceeds from common stock issued under share plans
Net loss
Balance	$ (1,087)
Retained Earnings [Member]
Balance	$ (260,793)
Unrealized gain on marketable securities
Currency translation adjustments
Stock-based compensation expense
Tax effect related to share awards
Net proceeds from common stock issued under share plans
Net loss	$ (8,098)
Balance	(268,891)
Balance	152,805
Unrealized gain on marketable securities	21	$ (19)
Currency translation adjustments	580
Stock-based compensation expense	1,892
Tax effect related to share awards	(264)
Net proceeds from common stock issued under share plans	136
Net loss	(8,098)	$ (382)
Balance	$ 147,072