Note 6 - 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	Feb. 01, 2014	Feb. 02, 2013
Equity investments
Equity investments	$ 3,873	$ 6,443
Notes receivable
Note receivable	230	3,250
Total equity investments and notes receivable	4,103	9,693
Issuer A [Member]
Equity investments
Equity investments	2,000	2,000
Notes receivable
Note receivable	230	750
Issuer B [Member]
Equity investments
Equity investments	1,000	1,000
Issuer C [Member]
Equity investments
Equity investments	730	1,000
Issuer D [Member]
Equity investments
Equity investments		300
Issuer E [Member]
Equity investments
Equity investments		2,000
Issuer F [Member]
Equity investments
Equity investments	143	143
Issuer G [Member]
Notes receivable
Note receivable		$ 2,500