Preliminary Purchase Price Allocation - S One Corporation (Detail) (USD $) In Thousands, unless otherwise specified					12 Months Ended			12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2012 S1 Corporation	Dec. 31, 2012 S1 Corporation Software	Dec. 31, 2012 S1 Corporation Software Minimum	Dec. 31, 2012 S1 Corporation Software Maximum	Dec. 31, 2012 S1 Corporation Customer relationships	Dec. 31, 2012 S1 Corporation Customer relationships Minimum	Dec. 31, 2012 S1 Corporation Customer relationships Maximum	Dec. 31, 2012 S1 Corporation Trademarks	Dec. 31, 2012 S1 Corporation Covenant not to compete
Business Acquisition [Line Items]
Cash and cash equivalents			$ 97,748
Billed and accrued receivables, net			65,329
Other current assets			16,791
Total current assets acquired			179,868
Property and equipment			18,440
Goodwill	625,990	501,141	256,244
Amortizable intangible assets				87,517			108,690			4,500	360
Deferred income tax			40,634
Acquired intangible assets, weighted-average useful lives					5 years	10 years		10 years	20 years	3 years	3 years
Other noncurrent assets			11,004
Total assets acquired			707,257
Deferred revenue			34,671
Accrued employee compensation			34,689
Other current liabilities			28,387
Total current liabilities acquired			97,747
Deferred income tax			15,795
Other noncurrent liabilities acquired			6,431
Total liabilities acquired			119,973
Net assets acquired			$ 587,284