Note 6. Investments In and Notes Receivable from Privately Held Companies (Detail) - Value of Investments In and Notes Receivable From Privately Held Companies (USD $) In Thousands, unless otherwise specified	May 04, 2013	Feb. 02, 2013
Equity investments	$ 6,443	$ 6,443
Notes Receivable	3,000	3,250
Total equity investments and notes receivable	9,443	9,693
Issuer B [Member]
Equity investments	2,000	2,000
Notes Receivable	500	750
Issuer C [Member]
Equity investments	1,000	1,000
Issuer D [Member]
Equity investments	1,000	1,000
Issuer E [Member]
Equity investments	300	300
Issuer F [Member]
Equity investments	2,000	2,000
Issuer G [Member]
Equity investments	143	143
Issuer H [Member]
Notes Receivable	$ 2,500	$ 2,500