Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Operating activities:
Net income (loss)	$ (150,081)	$ 6,571
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities, net of the effect of acquisitions:
Depreciation and amortization	9,078	8,911
Goodwill and long-lived asset impairment	112,904
Loss on disposal of fixed assets	108
Lease incentives	2,223
Provision for doubtful accounts and other adjustments to accounts receivable	372	908
Provision for excess and obsolete inventory	121	167
Excess tax benefits from stock-based compensation		(648)
Non-cash compensation related to stock options and restricted stock	5,131	7,012
Change in operating accounts, net of effect from acquisitions:
Accounts receivable	20,404	(9,038)
Income tax receivable	(5,178)
Deferred taxes	841	4
Inventories	(72)	(143)
Prepaid expenses and other assets	(475)	373
Accounts payable and accrued liabilities	(1,150)	1,301
Net cash provided by (used in) operating activities	(5,774)	15,418
Investing activities:
Acquisitions, net of cash received		(532)
Capital expenditures	(13,100)	(4,210)
Sale (purchase) of short-term investments	20,673	(13,948)
Net cash provided by (used in) investing activities	7,573	(18,690)
Financing activities:
Excess tax benefits from stock-based compensation		648
Cash received from stock sale for employee stock purchase plan	412
Cash received from exercise of stock options	12	349
Net cash provided by financing activities	424	997
Net increase (decrease) in cash and cash equivalents	2,223	(2,275)
Cash and cash equivalents, beginning of period	17,856	14,577
Cash and cash equivalents, end of period	20,079	12,302
Supplemental disclosures of cash flow information:
Cash paid for income taxes	$ 519	$ 3,389