Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net income (loss)	$ 3,189	$ (8,242)	$ (8,007)	$ 3,259
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	8,096	8,263	16,183	16,197
Realized gain from sale of marketable securities	(7)		(7)
Loss on disposition of fixed asset	61		61
Stock-based compensation to employees and directors	1,643	1,708	2,986	4,279
Amortization of deferred loan costs and debt discount	37	60	104	242
(Gain) loss from early extinguishment of debt		27	1,226	(115)
Restructuring charges (reversals)	98		98	(433)
Changes in operating assets and liabilities:
Restricted cash	(8)	147	351	533
Accounts receivable, net	3,417	6,918	(3,442)	1,643
Inventories, net	1,919	11,044	(4)	4,656
Prepaid inventories, net	(727)	405	(77)	1,041
Prepaids and other assets	(2,890)	(4,321)	975	(3,160)
Other long-term assets, net	889	230	499	1,292
Accounts payable	(29,651)	(28,513)	1,806	(1,477)
Accrued liabilities	(12,352)	(8,773)	3,373	3,643
Deferred revenue	(3,715)	(2,573)	2,809	1,268
Other long-term liabilities	60	84	324	(144)
Net cash provided by (used in) operating activities	(29,941)	(23,536)	19,258	32,724
Cash flows from investing activities:
Purchases of marketable securities	(55)	(79)	(136)	(152)
Sale of marketable securities	154		154
Proceeds from sale of fixed assets	55		55
Purchases of intangible assets	(6)		(10)	(396)
Investment in precious metals				(1,567)
Expenditures for fixed assets, including internal-use software and website development	(6,503)	(4,024)	(11,220)	(9,708)
Net cash used in investing activities	(6,355)	(4,103)	(11,157)	(11,823)
Cash flows from financing activities:
Payments on capital lease obligations	(112)	(568)	(274)	(701)
Drawdowns on line of credit			17,000
Capitalized financing costs			(140)
Proceeds from finance obligations		748	681	17,131
Payments on finance obligations		(2,066)	(22,852)	(2,907)
Paydown on direct financing arrangement	(115)	(106)	(225)	(207)
Payments to retire convertible senior notes		(10,110)	(24,505)	(25,927)
Purchase of redeemable stock				(26)
Purchase of treasury stock	(464)	(1,600)	(468)	(1,607)
Exercise of stock options				15
Net cash used in financing activities	(691)	(13,702)	(30,783)	(14,229)
Net Increase (decrease) in cash and cash equivalents	(36,987)	(41,341)	(22,682)	6,672
Cash and cash equivalents, beginning of period	96,985	124,021	82,680	76,008
Cash and cash equivalents, end of period	59,998	82,680	59,998	82,680
Cash paid during the period:
Interest paid	294	1,191	1,472	2,383
Taxes paid	4	260	4	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	279	354	(666)	3
Equipment acquired under finance obligations		3,686	1,391	4,285
Equipment and software acquired under capital lease obligations				6
Lapse of rescission rights of redeemable stock		$ 473	$ 109	$ 733