Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 28, 2012	Jan. 29, 2011	Jan. 30, 2010
OPERATING ACTIVITIES:
Net loss	$ (48,064)	$ (25,868)	$ (41,998)
Adjustments to reconcile net loss to net cash provided by (used for) operating activities:
Depreciation and amortization	12,827	13,337	14,320
Share-based payment compensation	5,007	3,350	3,205
Amortization of deferred revenue	(1,061)	(728)	(715)
Amortization of debt discount	575	2,121	181
Amortization of deferred finance costs	609	305	0
Gain on sale of investments	0	0	(3,628)
Gain from disposal of equipment	(416)	0	0
Asset impairments and write-offs	0	809	1,446
Loss on debt extinguishment	25,679	1,235	0
Changes in operating assets and liabilities:
Accounts receivable	9,909	(21,292)	(17,581)
Inventories, net	(3,676)	4,277	6,980
Prepaid expenses and other	(460)	348	(493)
Deferred revenue	500	0	31
Accounts payable and accrued liabilities	(15,447)	16,768	(4,325)
Accrued dividends payable — Series B Preferred Stock	1,069	5,665	4,681
Net cash provided by (used for) operating activities	(12,949)	327	(37,896)
INVESTING ACTIVITIES:
Property and equipment additions	(11,096)	(7,584)	(7,578)
Proceeds from sale of short and long-term investments	0	0	19,356
Proceeds from disposal of equipment	416	55	0
Change in restricted cash and investments	2,861	99	(3,471)
Net cash used for investing activities	(7,819)	(7,430)	8,307
FINANCING ACTIVITIES:
Payments for repurchases of common stock	0	0	(937)
Payment on redemption of Series A preferred stock	0	0	(3,400)
Payment for Series B Preferred stock redemption	0	0	(3,648)
Payments for deferred issuance costs	(306)	(3,292)	0
Payment for Series B Preferred stock dividend	(8,915)	(2,500)	0
Payments for Series B Preferred Stock and other issuance costs	(40,853)	0	0
Proceeds from exercise of stock options	1,828	357	729
Proceeds from issuance of term loan	0	25,000	0
Procceeds from issuance of common stock, net	55,500	17,009	0
Net cash provided by (used for) financing activities	7,254	36,574	(7,256)
Net increase (decrease) in cash and cash equivalents	(13,514)	29,471	(36,845)
BEGINNING CASH AND CASH EQUIVALENTS	46,471	17,000	53,845
ENDING CASH AND CASH EQUIVALENTS	$ 32,957	$ 46,471	$ 17,000