Consolidated Statements of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues:
Software-enabled services	$ 592,528	$ 552,565	$ 406,477
Software licenses	36,339	28,687	22,466
Maintenance	105,598	103,409	93,760
Professional services	33,396	28,041	29,139
Total revenues	767,861	712,702	551,842
Cost of revenues:
Software-enabled services	342,625	322,719	234,214
Software licenses	3,701	5,302	6,336
Maintenance	41,254	41,046	40,394
Professional services	23,151	19,733	18,973
Total cost of revenues	410,731	388,800	299,917
Gross profit	357,130	323,902	251,925
Operating expenses:
Selling and marketing	48,592	41,885	33,858
Research and development	57,287	53,862	45,779
General and administrative	50,879	45,187	34,797
Transaction costs			14,275
Total operating expenses	156,758	140,934	128,709
Operating income	200,372	182,968	123,216
Interest income	1,705	1,116	417
Interest expense	(27,177)	(42,395)	(32,918)
Other income (expense), net	2,754	3,498	(15,875)
Loss on extinguishment of debt			(4,355)
Income before income taxes	177,654	145,187	70,485
Provision for income taxes (Note 5)	46,527	27,292	24,665
Net income	131,127	117,895	45,820
Basic earnings per share	$ 1.57	$ 1.45	$ 0.59
Basic weighted average number of common shares outstanding	83,314	81,195	78,321
Diluted earnings per share	$ 1.50	$ 1.38	$ 0.55
Diluted weighted average number of common and common equivalent shares outstanding	87,331	85,616	82,888
Net income	131,127	117,895	45,820
Other comprehensive (loss) income, net of tax:
Foreign currency exchange translation adjustment	(45,495)	(21,144)	26,105
Total comprehensive (loss) income, net of tax	(45,495)	(21,144)	26,105
Comprehensive income	$ 85,632	$ 96,751	$ 71,925