Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues
Recurring	$ 323,548	$ 219,987	$ 148,207
Implementation and other	5,593	4,666	2,722
Total revenues	329,141	224,653	150,929
Cost of revenues
Operating expenses	48,268	31,790	24,694
Depreciation and amortization	5,798	3,683	2,624
Total cost of revenues	54,066	35,473	27,318
Administrative expenses
Sales and marketing	119,258	92,554	63,547
Research and development	20,966	8,627	4,325
General and administrative	69,046	47,826	35,501
Depreciation and amortization	7,834	5,738	4,538
Total administrative expenses	217,104	154,745	107,911
Total operating expenses	271,170	190,218	135,229
Operating income	57,971	34,435	15,700
Interest expense	(1,036)	(1,427)	(3,421)
Net loss on early repayment of debt			(4,044)
Other income, net	308	517	1,421
Income before income taxes	57,243	33,525	9,656
Provision for income taxes	13,403	12,580	3,993
Net income	$ 43,840	$ 20,945	$ 5,663
Earnings per share, basic	$ 0.76	$ 0.37	$ 0.11
Earnings per share, diluted	$ 0.74	$ 0.36	$ 0.11
Weighted average shares outstanding:
Basic	57,550,204	56,495,170	49,784,154
Diluted	58,968,099	57,919,700	51,857,309