Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) segment	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segment			3
Revenues	$ 476,867	$ 425,148	$ 914,761	$ 820,310
Direct operating costs	281,759	258,079	553,385	509,436
Salaries and benefits	73,838	64,760	141,075	125,088
Selling, general and administrative	42,445	38,616	80,299	72,650
Depreciation and amortization	19,515	16,513	38,803	33,793
Total operating expenses	417,557	377,968	813,562	740,967
Operating income (expense)	59,310	47,180	101,199	79,343
Property, Plant and Equipment, Net	176,297		176,297		$ 157,368
Assets	2,420,487		2,420,487		2,192,714
Eft Processing Segment [Member]
Segment Reporting Information [Line Items]
Revenues	115,127	93,075	201,696	167,755
Direct operating costs	56,372	45,075	103,119	84,204
Salaries and benefits	13,241	11,598	24,647	22,604
Selling, general and administrative	8,214	6,610	14,512	12,380
Depreciation and amortization	9,412	7,754	18,260	15,159
Total operating expenses	87,239	71,037	160,538	134,347
Operating income (expense)	27,888	22,038	41,158	33,408
Property, Plant and Equipment, Net	115,111		115,111		99,798
Assets	703,019		703,019		469,351
Epay Segment [Member]
Segment Reporting Information [Line Items]
Revenues	160,614	166,824	330,719	342,749
Direct operating costs	121,049	126,519	251,211	263,736
Salaries and benefits	12,605	12,382	24,700	24,427
Selling, general and administrative	8,191	9,015	17,158	17,028
Depreciation and amortization	2,698	2,728	5,764	5,805
Total operating expenses	144,543	150,644	298,833	310,996
Operating income (expense)	16,071	16,180	31,886	31,753
Property, Plant and Equipment, Net	23,708		23,708		24,834
Assets	572,561		572,561		646,000
Money Transfer Segment [Member]
Segment Reporting Information [Line Items]
Revenues	201,480	165,651	383,053	310,457
Direct operating costs	104,692	86,860	199,762	162,080
Salaries and benefits	39,374	33,301	76,217	64,394
Selling, general and administrative	24,192	21,772	45,006	39,733
Depreciation and amortization	7,353	5,964	14,673	12,692
Total operating expenses	175,611	147,897	335,658	278,899
Operating income (expense)	25,869	17,754	47,395	31,558
Property, Plant and Equipment, Net	37,371		37,371		32,591
Assets	1,123,592		1,123,592		1,040,737
Corporate Services, Eliminations and Other [Member]
Segment Reporting Information [Line Items]
Revenues	(354)	(402)	(707)	(651)
Direct operating costs	(354)	(375)	(707)	(584)
Salaries and benefits	8,618	7,479	15,511	13,663
Selling, general and administrative	1,848	1,219	3,623	3,509
Depreciation and amortization	52	67	106	137
Total operating expenses	10,164	8,390	18,533	16,725
Operating income (expense)	(10,518)	$ (8,792)	(19,240)	$ (17,376)
Property, Plant and Equipment, Net	107		107		145
Assets	$ 21,315		$ 21,315		$ 36,626