Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating activities:
Net income (loss)	$ (159,606)	$ 12,346	$ 4,752
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities, net of the effect of acquisitions:
Depreciation and amortization	10,177	11,778	10,540
Goodwill and long-lived asset impairment	112,904
Loss (gain) on disposal of fixed assets	181	29	(11)
Lease incentives	2,223
Provision for adjustments to accounts receivable and doubtful accounts	1,244	851	1,596
Provision for excess and obsolete inventory	158	203	1,063
Tax benefits from stock-based compensation		(1,543)	(871)
Non cash compensation related to stock options and restricted stock	6,530	9,496	8,724
Change in operating accounts, net of effect from acquisitions:
Accounts receivable	20,043	(6,516)	(5,998)
Income tax receivable	(5,421)	(1,892)	(980)
Deferred income taxes	414	849	914
Inventories	(97)	(167)	(372)
Prepaid expenses and other assets	58	259	(507)
Accounts payable and accrued liabilities	(2,355)	(949)	(384)
Net cash provided by (used in) operating activities	(13,547)	24,744	18,466
Investing activities:
Capital expenditures	(13,431)	(6,312)	(4,809)
Cash proceeds from the disposal of fixed assets			31
Sale (purchase) of short-term investments	16,172	(23,418)	(8,706)
Net cash provided by (used in) investing activities	2,741	(30,262)	(20,391)
Financing activities:
Tax benefits from stock-based compensation		1,543	871
Cash received from stock sale for employee stock purchase plan	413
Cash received from exercise of stock options	12	7,254	1,665
Net cash provided by financing activities	425	8,797	2,536
Net increase (decrease) in cash and cash equivalents	(10,381)	3,279	611
Cash and cash equivalents, beginning of period	17,856	14,577	13,966
Cash and cash equivalents, end of period	7,475	17,856	14,577
Supplemental disclosures of cash flow information:
Cash paid for income taxes	700	5,776	6,612
Avot Media [Member]
Investing activities:
Acquisition of Avot Media and Core Mobility, net of cash received		(675)
Core Mobility [Member]
Investing activities:
Acquisition of Avot Media and Core Mobility, net of cash received		$ 143	$ (6,907)