Note 15 - Risk Management and Derivatives - Net Notional Amount of All Purchase and Sale Contracts of a Foreign Currency (Details) - USD ($) $ in Thousands	Aug. 03, 2019	Feb. 02, 2019	Aug. 04, 2018
Foreign Exchange Forward, Euro [Member]
Notional Amount	$ 5,718	$ 13,383	$ 14,852
Foreign Exchange Forward, US Dollars [Member]
Notional Amount	9,630	15,196	15,992
Foreign Exchange Forward, Chinese Yuan [Member]
Notional Amount	3,643	4,507	12,394
Foreign Exchange Forward, New Taiwanese Dollars [Member]
Notional Amount	329	461	526
Foreign Exchange Forward, Other Currencies [Member]
Notional Amount	250	382	391
Foreign Exchange Forward [Member]
Notional Amount	$ 19,570	$ 33,929	$ 44,155