CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock	Common Stock Warrants	Treasury Stock	Additional Paid- in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2009	$ 236,063	$ 204	$ 24,003	$ (158,652)	$ 307,279	$ 78,094	$ (14,865)
Net income	27,195					27,195
Other comprehensive income (loss)	(279)						(279)
Repurchase of common stock	(18,624)			(18,624)
Shares issued and forfeited, net, under stock plans	4,040			6,162	(2,122)
Stock-based compensation	7,790				7,790
Repurchase of restricted stock for tax withholdings	(562)			(562)
Ending Balance at Dec. 31, 2010	255,623	204	24,003	(171,676)	312,947	105,289	(15,144)
Net income	45,852					45,852
Other comprehensive income (loss)	(2,117)						(2,117)
Shares issued and forfeited, net, under stock plans	7,460			9,007	(1,547)
Stock-based compensation	11,254				11,254
Repurchase of restricted stock for tax withholdings	(742)			(742)
Ending Balance at Dec. 31, 2011	317,330	204	24,003	(163,411)	322,654	151,141	(17,261)
Net income	48,846					48,846
Other comprehensive income (loss)	3,230						3,230
Issuance of 5,785,280 shares of common stock for acquisition of S1 Corporation	204,856	28			204,828
Shares issued and forfeited, net, under stock plans	21,574			26,158	(4,584)
Issuance of 95,500 shares from treasury stock for acquisition of S1 Corporation	2,174			2,174
Repurchase of 1,437,692 shares of common stock	(57,836)			(57,836)
Issuance of 361,470 shares from treasury stock for common stock warrant exercises	11,866		(2,769)	9,404	5,231
Cash settlement of common stock warrants	(29,596)		(21,234)		(8,362)
Stock-based compensation	15,186				15,186
Repurchase of restricted stock for tax withholdings	(3,273)			(3,273)
Ending Balance at Dec. 31, 2012	$ 534,357	$ 232		$ (186,784)	$ 534,953	$ 199,987	$ (14,031)