Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 453,422	$ 360,580	$ 1,202,199	$ 1,037,767
Direct operating costs	274,814	223,551	743,789	656,933
Salaries and benefits	64,587	52,819	178,529	153,298
Selling, general and administrative	43,968	33,254	117,820	95,714
Acquisition-related contingent consideration gain	0	(19,319)	0	(19,319)
Depreciation and amortization	19,321	14,930	52,819	48,838
Total operating expenses	402,690	305,235	1,092,957	935,464
Operating income (expense)	50,732	55,345	109,242	102,303
Property, Plant and Equipment, Net	123,359		123,359		116,230
Assets	1,966,033		1,966,033		1,598,115
Eft Processing Segment [Member]
Segment Reporting Information [Line Items]
Revenues	107,503	83,594	271,580	219,149
Direct operating costs	46,612	36,576	125,773	104,103
Salaries and benefits	12,155	10,195	35,127	29,409
Selling, general and administrative	6,516	5,249	19,167	16,530
Acquisition-related contingent consideration gain		(19,319)		(19,319)
Depreciation and amortization	8,010	6,273	22,951	22,242
Total operating expenses	73,293	38,974	203,018	152,965
Operating income (expense)	34,210	44,620	68,562	66,184
Property, Plant and Equipment, Net	71,714		71,714		64,972
Assets	452,212		452,212		347,073
Epay Segment [Member]
Segment Reporting Information [Line Items]
Revenues	195,086	182,629	562,129	548,867
Direct operating costs	153,121	142,284	434,984	424,343
Salaries and benefits	14,356	13,494	41,856	41,976
Selling, general and administrative	11,160	10,687	31,433	30,689
Acquisition-related contingent consideration gain		0		0
Depreciation and amortization	3,998	4,036	12,323	12,569
Total operating expenses	182,635	170,501	520,596	509,577
Operating income (expense)	12,451	12,128	41,533	39,290
Property, Plant and Equipment, Net	25,230		25,230		27,176
Assets	615,769		615,769		757,942
Money Transfer Segment [Member]
Segment Reporting Information [Line Items]
Revenues	151,250	95,276	369,568	271,536
Direct operating costs	75,455	45,588	183,985	130,221
Salaries and benefits	32,219	23,120	83,472	64,601
Selling, general and administrative	23,747	14,521	57,438	40,621
Acquisition-related contingent consideration gain		0		0
Depreciation and amortization	7,246	4,530	17,337	13,751
Total operating expenses	138,667	87,759	342,232	249,194
Operating income (expense)	12,583	7,517	27,336	22,342
Property, Plant and Equipment, Net	26,202		26,202		23,768
Assets	872,515		872,515		472,390
Corporate Services, Eliminations and Other [Member]
Segment Reporting Information [Line Items]
Revenues	(417)	(919)	(1,078)	(1,785)
Direct operating costs	(374)	(897)	(953)	(1,734)
Salaries and benefits	5,857	6,010	18,074	17,312
Selling, general and administrative	2,545	2,797	9,782	7,874
Acquisition-related contingent consideration gain		0		0
Depreciation and amortization	67	91	208	276
Total operating expenses	8,095	8,001	27,111	23,728
Operating income (expense)	(8,512)	(8,920)	(28,189)	(25,513)
Property, Plant and Equipment, Net	213		213		314
Assets	$ 25,537		$ 25,537		$ 20,710