Segment Information - Operations by Segments (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) segment	Jun. 30, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of operating business segments (in segment) | segment			4
Revenues	$ 113,347	$ 103,511	$ 223,621	$ 204,791
Operating costs and expenses	82,707	73,517	159,426	144,205
Depreciation and amortization	15,728	15,899	31,595	31,583
Non-operating income (expenses)	106	1,478	1,122	2,895
EBITDA	46,474	47,371	96,912	95,064
Compensation and benefits	4,473	2,127	8,302	4,203
Transaction, refinancing and other fees	2,821	632	2,522	22
Adjusted EBITDA	53,768	50,130	107,736	99,289
Operating Segments | Payment Services - Puerto Rico & Caribbean
Segment Reporting Information [Line Items]
Revenues	28,043	27,144	55,211	53,596
Operating costs and expenses	13,130	11,682	26,063	23,484
Depreciation and amortization	2,409	2,269	4,725	4,418
Non-operating income (expenses)	551	556	1,367	1,109
EBITDA	17,873	18,287	35,240	35,639
Compensation and benefits	485	125	678	224
Transaction, refinancing and other fees	0	0	(250)	(660)
Adjusted EBITDA	18,358	18,412	35,668	35,203
Operating Segments | Payment Services - Latin America
Segment Reporting Information [Line Items]
Revenues	19,236	12,973	39,627	25,937
Operating costs and expenses	18,407	13,603	36,467	25,869
Depreciation and amortization	2,249	1,848	4,698	3,719
Non-operating income (expenses)	1,401	2,724	3,214	5,455
EBITDA	4,479	3,942	11,072	9,242
Compensation and benefits	317	156	717	307
Transaction, refinancing and other fees	0	0	0	0
Adjusted EBITDA	4,796	4,098	11,789	9,549
Operating Segments | Merchant Acquiring, net
Segment Reporting Information [Line Items]
Revenues	25,964	23,506	49,343	45,991
Operating costs and expenses	14,112	13,688	27,253	27,101
Depreciation and amortization	421	596	841	1,195
Non-operating income (expenses)	4	0	8	1
EBITDA	12,277	10,414	22,939	20,086
Compensation and benefits	360	121	550	216
Transaction, refinancing and other fees	1	0	1	0
Adjusted EBITDA	12,638	10,535	23,490	20,302
Operating Segments | Business Solutions
Segment Reporting Information [Line Items]
Revenues	49,233	48,672	97,154	96,669
Operating costs and expenses	30,351	29,600	59,366	59,365
Depreciation and amortization	3,520	4,082	7,039	8,096
Non-operating income (expenses)	66	3	366	3
EBITDA	22,468	23,157	45,193	45,403
Compensation and benefits	684	286	1,124	512
Transaction, refinancing and other fees	0	0	0	0
Adjusted EBITDA	23,152	23,443	46,317	45,915
Corporate and Other
Segment Reporting Information [Line Items]
Revenues	(9,129)	(8,784)	(17,714)	(17,402)
Operating costs and expenses	6,707	4,944	10,277	8,386
Depreciation and amortization	7,129	7,104	14,292	14,155
Non-operating income (expenses)	(1,916)	(1,805)	(3,833)	(3,673)
EBITDA	(10,623)	(8,429)	(17,532)	(15,306)
Compensation and benefits	2,627	1,439	5,233	2,944
Transaction, refinancing and other fees	2,820	632	2,771	682
Adjusted EBITDA	$ (5,176)	$ (6,358)	$ (9,528)	$ (11,680)