Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income (loss)	$ (16,029)	$ (970)	$ (1,170)	$ 11,757
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	12,472	10,471	16,581	13,312
Realized loss on marketable securities				9
(Gain) Loss on disposition of fixed asset		14	(14)	13
Stock-based compensation to employees and directors	2,411	3,770	3,697	5,092
Amortization of debt discount	77	306	162	367
(Gain) loss from early extinguishment of debt	54	(346)	54	(346)
Restructuring reversals		(136)	(433)	(136)
Changes in operating assets and liabilities:
Restricted cash	159	1,872	159	1,743
Accounts receivable, net	5,115	3,252	(57)	1,012
Inventories, net	12,904	(11,018)	15,183	(12,358)
Prepaid inventories, net	667	168	1,296	905
Prepaids and other assets	(3,218)	(1,176)	(1,674)	(852)
Other long-term assets, net	12	(474)	271	(514)
Accounts payable	(24,775)	(30,837)	(3,253)	12,056
Accrued liabilities	(3,507)	(6,649)	567	1,098
Deferred revenue	(2,847)	85	430	1,550
Other long-term liabilities	205	(54)	(55)	(54)
Net cash provided by (used in) operating activities	(16,300)	(31,722)	31,744	34,654
Cash flows from investing activities:
Purchases of marketable securities	(119)	(100)	(155)	(100)
Purchases of intangible assets	(7)	(380)	(23)	(380)
Sale of marketable securities prior to maturity				(9)
Investment in precious metals		(1,657)		(1,657)
Expenditures for fixed assets, including internal-use software and website development	(6,344)	(19,317)	(7,538)	(20,583)
Net cash used in investing activities	(6,470)	(21,454)	(7,716)	(22,729)
Cash flows from financing activities:
Payments on capital lease obligations	(654)	(422)	(722)	(472)
Capitalized financing costs	(121)		(121)	(245)
Proceeds from finance obligations	1,429	14,577	3,235	14,577
Payments on finance obligations	(3,390)		(4,231)
Paydown on direct financing arrangement	(160)	(146)	(211)	(205)
Proceeds from long-term debt	17,000		17,000
Payments to retire convertible senior notes	(34,615)	(24,865)	(34,615)	(24,865)
Purchase of redeemable stock			(26)
Purchase of treasury stock	(1,602)	(821)	(1,606)	(828)
Exercise of stock options		1,504	(1)	1,530
Net cash used in financing activities	(22,113)	(10,173)	(21,298)	(10,508)
Net increase (decrease) in cash and cash equivalents	(44,883)	(63,349)	2,730	1,417
Cash and cash equivalents, beginning of period	124,021	139,757	76,408	74,991
Cash and cash equivalents, end of period	79,138	76,408	79,138	76,408
Cash paid during the period:
Interest paid	1,814	1,598	2,750	2,898
Taxes paid	260	187	260	187
Non-cash investing and financing activities:
Fixed assets, including internal-use software and website development, costs financed through accounts payable and accrued liabilities	270	910	155	910
Equipment acquired under finance obligations	5,077		5,676
Equipment and software acquired under capital lease obligations		6
Lapse of rescission rights of redeemable stock	582		842
Issuance of common stock from treasury for 401(k) matching contribution		$ 87		$ 256