Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Condensed Consolidated Statements Of Operations [Abstract]
Revenue	$ 75,058	$ 39,982	$ 183,881	$ 99,526
Cost of revenue	44,341	23,915	109,775	64,097
Gross margin	30,717	16,067	74,106	35,429
Expenses:
Selling, general and administrative	13,096	8,539	36,166	31,947
Depreciation and amortization	993	1,230	3,029	3,604
Research and development	523	294	1,616	1,021
Total expenses	14,612	10,063	40,811	36,572
Income (loss) from operations	16,105	6,004	33,295	(1,143)
Other income (expense):
Change in fair value of warrant liability	7,802	(1,106)	18,609	(2,422)
Interest expense	(3,287)	(5,384)	(12,633)	(14,546)
Other income, net	23	81	43	132
Loss on extinguishment of debt			(3,225)	(995)
Other financing costs				(816)
Total other income (expense)	4,538	(6,409)	2,794	(18,647)
Income (loss) before income taxes	20,643	(405)	36,089	(19,790)
Income tax (expense) benefit	(2,726)	(758)	(5,672)	2,952
Net income (loss)	17,917	(1,163)	30,417	(16,838)
Accrued dividends and accretion of discount on preferred stock		(1,191)	(4,868)	(5,092)
Net income (loss) attributable to common stockholders	$ 17,917	$ (2,354)	$ 25,549	$ (21,930)
Basic and diluted earnings (loss) per common share:
Basic earnings (loss) per common share	$ 0.38	$ (0.09)	$ 0.59	$ (0.90)
Diluted earnings (loss) per common share	$ 0.35	$ (0.09)	$ 0.55	$ (0.90)
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	47,178	26,690	43,201	24,458
Weighted average common shares used in computing diluted earnings (loss) per common share	54,329	26,690	46,913	24,458