Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	May 03, 2014	Feb. 01, 2014	May 04, 2013	Feb. 02, 2013
Note 2 - Cash, Cash Equivalents and Marketable Securities (Details) - Cash, Cash Equivalents and Marketable Securities [Line Items]
Book value	$ 31,628	$ 36,498
Net unrealized gain (loss)	379	319
Fair value - cash equivalents and marketable securities	32,007	36,817
Fair value - cash on hand	48,208	50,805
Fair value - cash, cash equivalents and marketable securities	80,215	87,622
Reported as:
Cash and cash equivalents	63,431	64,326	54,447	51,218
Short-term marketable securities	6,920	7,791
Long-term marketable securities	9,864	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	1,464	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	46,744	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	15,128	21,186
Net unrealized gain (loss)	357	308
Fair value - cash equivalents and marketable securities	15,485	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	15,224	13,521
Fair value - cash equivalents and marketable securities	15,224	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	1,276	1,286
Net unrealized gain (loss)	22	8
Fair value - cash equivalents and marketable securities	$ 1,298	$ 1,294