Condensed Consolidated Statement of Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Warrant [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit
Total Shareholders' Equity period beginning at Jan. 29, 2011	$ 83,152	$ 378	$ 602	$ 337,421	$ (255,249)
Common Stock, Shares, Outstanding period beginning at Jan. 29, 2011	37,781,688	37,781,688
Net loss	(39,736)	0	0	0	(39,736)
Common stock issuances pursuant to equity compensation plans, Shares		513,362
Common stock issuances pursuant to equity compensation plans, Value	1,712	5	0	1,707	0
Share-based compensation		0
Share-based compensation	3,737	0	0	3,737	0
Common stock issuances - equity offerings, Shares		9,487,500
Common stock issuances - equity offerings, Value	55,500	95	0	55,405	0
Common stock issuances - NBCU, Shares		689,655
Common stock issuances - NBCU, Value	4,166	7	0	4,159	0
Total Shareholders' Equity period end at Oct. 29, 2011	$ 108,531	$ 485	$ 602	$ 402,429	$ (294,985)
Common Stock, Shares, Outstanding period end at Oct. 29, 2011	48,472,205	48,472,205