Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Revenues:
Processing and related services	$ 136,314	$ 131,378
Software, maintenance and services	48,693	51,714
Total revenues	185,007	183,092
Cost of revenues (exclusive of depreciation, shown separately below):
Processing and related services	61,960	61,259
Software, maintenance and services	28,009	29,505
Total cost of revenues	89,969	90,764
Other operating expenses:
Research and development	27,922	28,638
Selling, general and administrative	31,625	33,339
Depreciation	5,837	6,247
Restructuring charges	702
Total operating expenses	156,055	158,988
Operating income	28,952	24,104
Other income (expense):
Interest expense	(4,152)	(4,341)
Amortization of original issue discount	(1,203)	(1,449)
Interest and investment income, net	220	234
Other, net	(205)	(303)
Total other	(5,340)	(5,859)
Income before income taxes	23,612	18,245
Income tax provision	(11,806)	(6,751)
Net income	$ 11,806	$ 11,494
Weighted-average shares outstanding - Basic:
Common stock	32,392	32,610
Participating restricted stock	66	327
Total	32,458	32,937
Weighted-average shares outstanding - Diluted:
Common stock	32,561	32,852
Participating restricted stock	66	327
Total	32,627	33,179
Earnings per common share:
Basic	$ 0.36	$ 0.35
Diluted	$ 0.36	$ 0.35