Condensed Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Software-enabled services	$ 294,803	$ 276,452
License, maintenance and related	127,126	131,247
Total revenues	421,929	407,699
Cost of revenues:
Software-enabled services	167,416	154,006
License, maintenance and related	62,164	63,453
Total cost of revenues	229,580	217,459
Gross profit	192,349	190,240
Operating expenses:
Selling and marketing	31,150	30,242
Research and development	38,919	38,449
General and administrative	35,433	31,832
Total operating expenses	105,502	100,523
Operating income	86,847	89,717
Interest expense, net	(25,354)	(29,020)
Other income (expense), net	438	(71)
Loss on extinguishment of debt		(2,326)
Income before income taxes	61,931	58,300
Provision for income taxes	10,681	10,153
Net income	$ 51,250	$ 48,147
Basic earnings per share	$ 0.25	$ 0.24
Diluted earnings per share	$ 0.24	$ 0.23
Basic weighted average number of common shares outstanding	206,993	203,376
Diluted weighted average number of common and common equivalent shares outstanding	217,656	209,704
Cash dividends declared and paid per common share	$ 0.07	$ 0.0625
Net income	$ 51,250	$ 48,147
Other comprehensive income, net of tax:
Foreign currency exchange translation adjustment	5,217	10,779
Total comprehensive income, net of tax	5,217	10,779
Comprehensive income	$ 56,467	$ 58,926