Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements Of Operations [Abstract]
Revenue	$ 258,785	$ 146,982	$ 112,550
Cost of revenue	(152,965)	(94,012)	(83,166)
Gross margin	105,820	52,970	29,384
Expenses:
Selling, general and administrative	(50,612)	(41,861)	(36,943)
Depreciation and amortization	(3,983)	(4,543)	(4,926)
Research and development	(2,337)	(1,441)	(2,118)
Impairment of long-lived assets		(8,898)
Loss on disposal of long-lived assets		(2,104)
Impairment of goodwill and intangible assets		(390)	(18,500)
Total expenses	(56,932)	(59,237)	(62,487)
Income (loss) from operations	48,888	(6,267)	(33,103)
Other income (expense):
Change in fair value of warrant liability	9,571	(21,464)	465
Interest expense	(15,960)	(19,399)	(15,524)
Loss on extinguishment of debt	(3,225)	(995)
Other financing costs		(816)
Other expense, net	(4)	(69)	(155)
Total other income (expense)	(9,618)	(42,743)	(15,214)
Income (loss) before income taxes	39,270	(49,010)	(48,317)
Income tax (provision) benefit	(7,862)	5,545	(2,016)
Net income (loss)	31,408	(43,465)	(50,333)
Accrued dividends and accretion of discount on preferred stock	(4,868)	(6,543)	(2,231)
Net income (loss) attributable to common stockholders	$ 26,540	$ (50,008)	$ (52,564)
Basic and diluted earnings (loss) per common share:
Basic earnings (loss) per common share	$ 0.60	$ (1.94)	$ (2.68)
Diluted earnings (loss) per common share	$ 0.56	$ (1.94)	$ (2.68)
Weighted average common shares used in computing basic and diluted earnings (loss) per common share:
Weighted average common shares used in computing basic earnings (loss) per common share	44,229	25,731	19,595
Weighted average common shares used in computing diluted earnings (loss) per common share	47,638	25,731	19,595