Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Software license	$ 19,758	$ 17,989	$ 39,072	$ 35,096
Services	107,344	93,519	208,547	180,432
Hardware and other	12,007	11,022	25,013	20,565
Total revenue	139,109	122,530	272,632	236,093
Costs and expenses:
Cost of license	2,137	1,848	5,043	3,461
Cost of services	46,464	41,457	91,248	79,917
Cost of hardware and other	10,163	9,265	20,710	16,744
Research and development	13,257	11,867	26,813	23,670
Sales and marketing	11,889	12,848	23,736	24,868
General and administrative	11,927	11,256	23,165	21,905
Depreciation and amortization	1,898	1,489	3,679	2,977
Total costs and expenses	97,735	90,030	194,394	173,542
Operating income	41,374	32,500	78,238	62,551
Other income, net	359	312	621	79
Income before income taxes	41,733	32,812	78,859	62,630
Income tax provision	15,729	12,218	29,651	23,324
Net income	$ 26,004	$ 20,594	$ 49,208	$ 39,306
Basic earnings per share	$ 0.35	$ 0.27	$ 0.67	$ 0.52
Diluted earnings per share	$ 0.35	$ 0.27	$ 0.66	$ 0.51
Weighted average number of shares:
Basic	73,618	75,274	73,797	75,544
Diluted	74,126	76,037	74,366	76,415