Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Condensed Consolidated Statements of Operations [Abstract]
Revenue	$ 78,303	$ 55,918	$ 157,498	$ 108,823
Cost of revenue	45,278	33,674	91,022	65,434
Gross margin	33,025	22,244	66,476	43,389
Expenses:
Selling, general and administrative	15,776	12,729	30,689	23,069
Depreciation and amortization	1,038	1,015	1,996	2,037
Research and development	622	594	1,454	1,093
Total expenses	17,436	14,338	34,139	26,199
Income from operations	15,589	7,906	32,337	17,190
Other income (expense):
Loss on extinguishment of debt	(995)	(3,225)	(6,386)	(3,225)
Change in fair value of warrant liability	(6,524)	(3,253)	(2,649)	(10,807)
Interest Expense	(2,164)	(4,489)	(4,415)	(9,346)
Other income (expense), net	(343)	3	(350)	20
Total other income (expense)	3,022	(4,458)	(8,502)	(1,744)
Income before income taxes	18,611	3,448	23,835	15,446
Income Tax Expense (Benefit)	(5,433)	(1,322)	(7,051)	(2,946)
Net income	13,178	2,126	16,784	12,500
Accrued dividends and accretion of discount on preferred stock				(4,868)
Net income attributable to common stockholders	$ 13,178	$ 2,126	$ 16,784	$ 7,632
Earnings per common share:
Basic earnings per common share	$ 0.27	$ 0.05	$ 0.35	$ 0.19
Diluted earnings per common share	$ 0.25	$ 0.04	$ 0.33	$ 0.17
Weighted average common shares:
Weighted average common shares used in computing basic earnings per common share	48,227	44,749	47,890	41,180
Weighted average common shares used in computing diluted earnings per common share	54,032	47,433	50,586	45,523