Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues:
Processing and related services	$ 537,453	$ 544,649	$ 524,666
Software and services	118,988	124,242	118,835
Maintenance	91,027	87,975	91,230
Total revenues	747,468	756,866	734,731
Cost of revenues (exclusive of depreciation, shown separately below):
Processing and related services	253,756	258,380	244,776
Software and services	84,222	85,562	82,834
Maintenance	39,187	39,874	38,040
Total cost of revenues	377,165	383,816	365,650
Other operating expenses:
Research and development	110,008	112,938	111,142
Selling, general and administrative	152,553	138,783	128,346
Depreciation	18,633	22,286	25,435
Restructuring charges	12,405	2,469	7,873
Total operating expenses	670,764	660,292	638,446
Operating income	76,704	96,574	96,285
Other income (expense):
Interest expense	(11,621)	(15,983)	(17,026)
Amortization of original issue discount	(5,352)	(4,954)	(5,206)
Interest and investment income, net	689	855	764
Other, net	1,099	732	1,155
Total other	(15,185)	(19,350)	(20,313)
Income before income taxes	61,519	77,224	75,972
Income tax provision	(10,168)	(28,345)	(33,690)
Net income	$ 51,351	$ 48,879	$ 42,282
Weighted-average shares outstanding - Basic:
Common stock	32,117	32,142	32,624
Participating restricted stock	0	17	189
Total	32,117	32,159	32,813
Weighted-average shares outstanding - Diluted:
Common stock	32,873	32,459	32,833
Participating restricted stock	0	17	189
Total	32,873	32,476	33,022
Earnings per common share:
Basic	$ 1.60	$ 1.52	$ 1.29
Diluted	$ 1.56	$ 1.51	$ 1.28