Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating activities:
Net loss	$ (21,320)	$ (150,081)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	3,321	9,078
Goodwill and long-lived asset impairment		112,904
Change in fair value of contingent liability	(1,210)
Loss on disposal of fixed assets	161	108
Lease incentives		2,223
Provision for doubtful accounts and other adjustments to accounts receivable	578	372
Provision for excess and obsolete inventory	41	121
Non-cash compensation related to stock options and restricted stock	3,052	5,131
Change in operating accounts:
Accounts receivable	(1,395)	20,404
Income tax receivable	750	(5,178)
Deferred taxes		841
Inventories	44	(72)
Prepaid expenses and other assets	(159)	(475)
Accounts payable and accrued liabilities	(1,881)	(1,150)
Net cash used in operating activities	(18,018)	(5,774)
Investing activities:
Capital expenditures	(277)	(13,100)
Sale of short-term investments	21,564	20,673
Net cash used in investing activities	21,287	7,573
Financing activities:
Cash received from stock sale for employee stock purchase plan	66	412
Cash received from exercise of stock options	16	12
Repurchase of common stock	(753)
Net cash provided by (used in) financing activities	(671)	424
Net increase in cash and cash equivalents	2,598	2,223
Cash and cash equivalents, beginning of period	7,475	17,856
Cash and cash equivalents, end of period	10,073	20,079
Supplemental disclosures of cash flow information:
Cash paid for income taxes	$ 199	$ 519