Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended				1 Months Ended	6 Months Ended	1 Months Ended							1 Months Ended	3 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended				3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Feb. 13, 2012	Feb. 13, 2012 New Senior Secured Credit Facilities	Jun. 30, 2013 New Senior Secured Credit Facilities	Sep. 18, 2012 Distra Pty Ltd	Sep. 18, 2012 Distra Pty Ltd Customer relationships	May 24, 2012 North Data Uruguay S.A.	May 24, 2012 North Data Uruguay S.A. Customer relationships	Feb. 13, 2012 S1 Corporation	Dec. 31, 2012 S1 Corporation	Dec. 31, 2012 S1 Corporation Customer relationships	Mar. 11, 2013 ORCC	Jun. 30, 2013 ORCC	Jun. 30, 2013 ORCC	Mar. 11, 2013 ORCC Series A-1 Convertible Preferred Stock	Jun. 30, 2013 ORCC Customer relationships	Mar. 31, 2013 Profesionales en Transacciones Electronicas S.A	Jun. 30, 2013 Profesionales en Transacciones Electronicas S.A	Jun. 30, 2013 Profesionales en Transacciones Electronicas S.A Customer relationships	Mar. 31, 2013 Profesionales en Transacciones Electronicas S.A. - Venezuela ("PTESA-V")	Mar. 31, 2013 Profesionales en Transacciones Electronicas S.A. - Ecuador ("PTESA-E")	Mar. 31, 2013 Profesionales En Transacciones Electronicas Venezuela And Ecuador	Mar. 31, 2013 Profesionales en Transacciones Electronicas S.A. - Colombia ("PTESA-C")
Business Acquisition [Line Items]
Cash paid per common stock																$ 3.85
Business acquisition common stock purchase price																$ 134,300,000
Business acquisition preferred stock purchase price																			127,200,000
Total purchase price											4,600,000		587,300,000			261,500,000					14,200,000					2,800,000	11,400,000
Additional borrowings under credit facility							295,000,000	300,000,000
Acquisition related transaction expenses																		5,400,000
Revenue																	38,400,000	47,200,000
Operating income (loss)	11,522,000	(7,858,000)	7,513,000	(9,471,000)													1,600,000	500,000
Percentage of ownership interest acquired									100.00%															100.00%	100.00%
Business acquisition cash paid									49,800,000				368,700,000									14,200,000
Goodwill	625,990,000		625,990,000		501,141,000				22,139,000		3,500,000			256,244,000			124,104,000	124,104,000				7,200,000
Amortizable intangible assets										6,200,000		2,200,000			108,690,000					68,750,000			7,700,000
Acquired intangible assets, weighted-average useful lives										10 years		12 years 7 months 6 days								15 years			14 years
Purchase price allocations adjustments			The purchase price allocations are preliminary and are subject to future adjustments during the maximum one-year allocation period.
Purchase price, non tax deductible goodwill amount																						1,500,000
Business acquisition, cash acquired											100,000
Acquisition transaction paid in shares													5,900,000
Issuance of shares from treasury stock for acquisition of S1 Corporation													95,500
Acquisition transaction paid in cash						$ 73,700,000