Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenue:
Software license	$ 17,989	$ 16,136	$ 35,096	$ 30,381
Services	93,519	78,203	180,432	153,090
Hardware and other	11,022	8,177	20,565	15,646
Total revenue	122,530	102,516	236,093	199,117
Costs and expenses:
Cost of license	1,848	1,937	3,461	3,715
Cost of services	41,457	35,058	79,917	70,104
Cost of hardware and other	9,265	7,023	16,744	13,237
Research and development	11,867	11,032	23,670	22,508
Sales and marketing	12,848	11,888	24,868	23,322
General and administrative	11,256	7,932	21,905	17,440
Depreciation and amortization	1,489	1,459	2,977	2,943
Total costs and expenses	90,030	76,329	173,542	153,269
Operating income	32,500	26,187	62,551	45,848
Other income, net	312	1,243	79	1,394
Income before income taxes	32,812	27,430	62,630	47,242
Income tax provision	12,218	10,023	23,324	16,480
Net income	$ 20,594	$ 17,407	$ 39,306	$ 30,762
Basic earnings per share	$ 0.27	$ 0.23	$ 0.52	$ 0.40
Diluted earnings per share	$ 0.27	$ 0.22	$ 0.51	$ 0.39
Weighted average number of shares:
Basic	75,274	76,888	75,544	77,096
Diluted	76,037	78,036	76,415	78,388