Acquisitions - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended									3 Months Ended			1 Months Ended						12 Months Ended		1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended
	Mar. 11, 2013	Mar. 31, 2013	Mar. 31, 2012	Feb. 13, 2012	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")	Mar. 31, 2013 Profesionales en Transacciones Electronicas S.A	Mar. 31, 2013 Profesionales en Transacciones Electronicas S.A Customer relationships	Mar. 31, 2013 Profesionales en Transacciones Electronicas S.A Customer relationships Minimum	Mar. 31, 2013 Profesionales en Transacciones Electronicas S.A Customer relationships Maximum	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	Dec. 31, 2012 S1 Corporation Customer relationships Minimum	Dec. 31, 2012 S1 Corporation Customer relationships Maximum	Mar. 11, 2013 ORCC	Mar. 31, 2013 ORCC	Mar. 11, 2013 ORCC Series A-1 Convertible Preferred Stock	Mar. 31, 2013 ORCC Customer relationships	Feb. 13, 2012 New Senior Secured Credit Facilities	Mar. 31, 2013 New Senior Secured Credit Facilities
Business Acquisition [Line Items]
Cash paid per common stock																						$ 3.85
Business acquisition common stock purchase price																						$ 132,900,000
Business acquisition preferred stock purchase price																								127,200,000
Total purchase price							2,800,000	11,400,000	14,200,000						4,600,000		587,300,000					260,100,000
Proceeds from senior bank financing arranged for business acquisition																										295,000,000	260,100,000
Additional borrowings under credit facility	300,000,000																										300,000,000
Acquisition related transaction expenses																							4,700,000
Revenue																							8,800,000
Operating income (losses)		(4,009,000)	(1,613,000)																				1,100,000
Percentage of ownership interest acquired					100.00%	100.00%							100.00%
Business acquisition cash paid									14,200,000				49,800,000				368,700,000
Goodwill									6,400,000				22,139,000		3,500,000			256,244,000					98,495,000
Amortizable intangible assets										8,500,000				6,200,000					108,690,000						99,150,000
Acquired intangible assets, weighted-average useful lives											14 years	15 years		10 years		12 years 7 months 6 days				10 years	20 years				15 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									1,700,000
Business acquisition, cash acquired															100,000
Business acquisition, customer relationships acquired																2,200,000
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