Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Aug. 02, 2014	Feb. 01, 2014	Aug. 03, 2013	Feb. 02, 2013
Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	$ 29,086	$ 36,498
Net unrealized gain (loss)	247	319
Fair value - cash equivalents and marketable securities	29,333	36,817
Fair value - cash on hand	52,689	50,805
Fair value - cash, cash equivalents and marketable securities	82,022	87,622
Reported as:
Cash and cash equivalents	69,848	64,326	57,141	51,218
Short-term marketable securities	5,828	7,791
Long-term marketable securities	6,346	15,505
United States [Member]
Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Fair value - cash on hand	3,912	1,104
Overseas [Member]
Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Fair value - cash on hand	48,777	49,701
Corporate Bond Securities [Member]
Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	10,644	21,186
Net unrealized gain (loss)	224	308
Fair value - cash equivalents and marketable securities	10,868	21,494
Money Market Funds [Member]
Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	17,159	13,521
Fair value - cash equivalents and marketable securities	17,159	13,521
Municipal Bonds and Notes [Member]
Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value		505
Net unrealized gain (loss)		3
Fair value - cash equivalents and marketable securities		508
Fixed Income Funds [Member]
Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	1,283	1,286
Net unrealized gain (loss)	23	8
Fair value - cash equivalents and marketable securities	$ 1,306	$ 1,294