Note 5 - Investments in and Notes Receivable from Privately Held Companies (Details) - Value of Investments in and Notes Receivable from Privately Held Companies (USD $) In Thousands, unless otherwise specified	May 03, 2014	Feb. 01, 2014
Equity investments:
Equity investments	$ 3,872	$ 3,873
Notes receivable:
Note receivable	170	230
Total equity investments and notes receivable	4,042	4,103
Issuer A [Member]
Equity investments:
Equity investments	2,000	2,000
Notes receivable:
Note receivable	170	230
Issuer B [Member]
Equity investments:
Equity investments	1,000	1,000
Issuer C [Member]
Equity investments:
Equity investments	730	730
Issuer D [Member]
Equity investments:
Equity investments	$ 142	$ 143