CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Professional service revenues	$ 342,074	$ 272,372	$ 148,233
Insurance service revenues	1,851,457	1,371,903	870,828
Total revenues	2,193,531	1,644,275	1,019,061
Costs and operating expenses:
Insurance costs	1,686,315	1,226,585	750,025
Cost of providing services (exclusive of depreciation and amortization of intangible assets)	134,256	106,661	63,563
Sales and marketing	139,997	109,183	59,931
General and administrative	53,926	52,455	37,879
Systems development and programming costs	26,101	19,948	16,718
Amortization of intangible assets	52,302	51,369	17,441
Depreciation	13,843	11,737	11,676
Total costs and operating expenses	2,106,740	1,577,938	957,233
Operating income	86,791	66,337	61,828
Other income (expense):
Interest expense and bank fees	(54,193)	(45,724)	(9,709)
Other, net	478	471	57
Income (loss) before provision for (benefit from) income taxes	33,076	21,084	52,176
Provision for (benefit from) income taxes	17,579	7,937	20,344
Net income (loss)	$ 15,497	$ 13,147	$ 31,832
Net income (loss) per share:
Basic	$ 0.24	$ 0.26	$ 0.66
Diluted	$ 0.22	$ 0.24	$ 0.63
Weighted average shares:
Basic	56,160,539	12,353,047	9,805,384
Diluted	59,566,773	15,731,807	12,476,091