Condensed Financial Statements Parent Company Only - Condensed Statements of Income and Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Non-operating income (expenses)
Equity in earnings of subsidiaries	$ 936	$ 692	$ 604
Interest income	1,217	787	716
Other (expenses) income	(1,169)	2,602	2,657
Income before income taxes	116,675	99,165	60,199
Income tax benefit	12,975	12,596	4,780
Net income attributable to EVERTEC, Inc.’s common stockholders	103,469	86,270	55,054
Other comprehensive income (loss), net of tax
(Loss) gain on cash flow hedges	(10,974)
(Loss) gain on cash flow hedges		(2,377)	2,178
Total comprehensive income attributable to EVERTEC, Inc.’s common stockholders	97,249	73,329	56,597
EVERTEC
Non-operating income (expenses)
Equity in earnings of subsidiaries	101,078	84,866	49,162
Interest income	367	380	301
Other (expenses) income	(1,595)	(1,396)	(1,428)
Income before income taxes	99,850	83,850	48,035
Income tax benefit	(3,619)	(2,420)	(7,019)
Net income attributable to EVERTEC, Inc.’s common stockholders	103,469	86,270	55,054
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	4,754	(10,564)	(635)
(Loss) gain on cash flow hedges	(10,974)
(Loss) gain on cash flow hedges		(2,377)	2,178
Total comprehensive income attributable to EVERTEC, Inc.’s common stockholders	$ 97,249	$ 73,329	$ 56,597