Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income (loss)	$ 2,719	$ (444)	$ (16,275)	$ 9,715
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	4,034	3,999	16,385	15,485
Realized gain from sale of marketable securities	(7)		(7)
Loss on disposition of fixed asset	85		85
Stock-based compensation to employees and directors	813	876	2,988	4,717
Amortization of deferred loan costs and debt discount	35	34	128	322
(Gain) loss from early extinguishment of debt		27	1,226	(319)
Restructuring charges (reversals)	98		98	(433)
Changes in operating assets and liabilities:
Restricted cash	(17)	159	330	646
Accounts receivable, net	1,560	5,679	(4,060)	530
Inventories, net	6,348	11,951	3,518	(522)
Prepaid inventories, net	(883)	296	(124)	1,684
Prepaids and other assets	3,156	1,119	1,581	106
Other long-term assets, net	694	290	244	1,101
Accounts payable	(27,587)	(28,029)	3,386	724
Accrued liabilities	(12,211)	(3,307)	(1,952)	755
Deferred revenue	(1,164)	(1,908)	4,695	924
Other long-term liabilities	93	30	411	(175)
Net cash provided by (used in) operating activities	(22,234)	(9,228)	12,657	35,260
Cash flows from investing activities:
Purchases of marketable securities	(38)	(39)	(159)	(145)
Purchases of intangible assets			(4)	(396)
Sale of marketable securities	117		117
Investment in precious metals				(1,657)
Expenditures for fixed assets, including internal-use software and website development	(2,127)	(1,676)	(9,192)	(17,721)
Net cash used in investing activities	(2,048)	(1,715)	(9,238)	(19,919)
Cash flows from financing activities:
Payments on capital lease obligations	(77)	(72)	(735)	(509)
Drawdowns on line of credit			17,000
Capitalized financing costs			(140)
Proceeds from finance obligations			1,429	16,383
Payments on finance obligations		(979)	(23,939)	(1,820)
Paydown on direct financing arrangement	(57)	(52)	(221)	(201)
Payments to retire convertible senior notes		(10,110)	(24,505)	(34,975)
Purchase of redeemable stock				(26)
Purchase of treasury stock	(464)	(1,589)	(479)	(1,622)
Exercise of stock options				1,503
Net cash used in financing activities	(598)	(12,802)	(31,590)	(21,267)
Net decrease in cash and cash equivalents	(24,880)	(23,745)	(28,171)	(5,926)
Cash and cash equivalents, beginning of period	96,985	124,021	100,276	106,202
Cash and cash equivalents, end of period	72,105	100,276	72,105	100,276
Cash paid during the period:
Interest paid	149	376	2,142	2,838
Taxes paid	2	260	2	302
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	121	76	12	(3,976)
Equipment acquired under finance obligations		545	4,532	1,144
Equipment and software acquired under capital lease obligations				6
Lapse of rescission rights of redeemable stock		$ 184	$ 398	$ 444