Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income (loss)	$ 5,882	$ (16,029)	$ 2,473	$ (1,170)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	11,935	12,472	15,813	16,581
Realized gain from sale of marketable securities	(8)		(8)
Loss (gain) on disposition of fixed assets	72		72	(14)
Stock-based compensation to employees and directors	2,624	2,411	3,264	3,697
Amortization of deferred loan costs and debt discount	55	77	105	162
Loss from early extinguishment of debt		54	1,199	54
Restructuring charges (reversals)	53		53	(433)
Changes in operating assets and liabilities:
Restricted cash	(24)	159	323	159
Accounts receivable, net	(519)	5,115	(5,575)	(57)
Inventories, net	1,603	12,904	(2,180)	15,183
Prepaid inventories, net	(641)	667	(253)	1,296
Prepaids and other assets	(314)	(3,218)	2,448	(1,674)
Other long-term assets, net	(1,160)	12	(1,332)	271
Accounts payable	(26,958)	(24,775)	761	(3,253)
Accrued liabilities	(7,478)	(3,507)	2,981	567
Deferred revenue	836	(2,847)	7,634	430
Other long-term liabilities	705	205	848	(55)
Net cash provided by (used in) operating activities	(13,337)	(16,300)	28,626	31,744
Cash flows from investing activities:
Purchases of marketable securities	(69)	(119)	(110)	(155)
Sale of marketable securities	154		154
Proceeds from sale of fixed assets	56		56
Purchases of intangible assets	(6)	(7)	(3)	(23)
Expenditures for fixed assets, including internal-use software and website development	(10,563)	(6,344)	(12,960)	(7,538)
Net cash used in investing activities	(10,428)	(6,470)	(12,863)	(7,716)
Cash flows from financing activities:
Payments on capital lease obligations	(112)	(654)	(188)	(722)
Drawdowns on line of credit		17,000		17,000
Capitalized financing costs		(121)	(19)	(121)
Proceeds from finance obligations		1,429		3,235
Payments on finance obligations		(3,390)	(21,528)	(4,231)
Paydown on direct financing arrangement	(175)	(160)	(231)	(211)
Payments to retire convertible senior notes		(34,615)		(34,615)
Purchase of treasury stock	(464)	(1,602)	(466)	(1,606)
Purchase of redeemable stock				(26)
Exercise of stock options				(1)
Net cash used in financing activities	(751)	(22,113)	(22,432)	(21,298)
Net increase (decrease) in cash and cash equivalents	(24,516)	(44,883)	(6,669)	2,730
Cash and cash equivalents, beginning of period	96,985	124,021	79,138	76,408
Cash and cash equivalents, end of period	72,469	79,138	72,469	79,138
Cash paid during the period:
Interest paid	436	1,814	991	2,750
Taxes paid	139	260	139	260
Non-cash investing and financing activities:
Change in fixed assets, including internal-use software and website development, costs financed through accounts payable and accrued liabilities	581	270	278	155
Equipment acquired under finance obligations		5,077		5,676
Lapse of rescission rights of redeemable stock		$ 582		$ 842