Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Revenues	$ 407,144	$ 389,507	$ 373,528
Operating costs and expenses
Cost of revenues, exclusive of depreciation and amortization shown below	200,650	175,809	167,916
Selling, general and administrative expenses	56,161	46,986	37,278
Depreciation and amortization	64,250	59,567	64,974
Total operating costs and expenses	321,061	282,362	270,168
Income from operations	86,083	107,145	103,360
Non-operating income (expenses)
Interest income	716	377	495
Interest expense	(29,861)	(24,617)	(24,266)
Earnings (losses) of equity method investment	604	(52)	147
Other income, net	2,657	544	2,306
Total non-operating expenses	(25,884)	(23,748)	(21,318)
Income before income taxes	60,199	83,397	82,042
Income tax expense (benefit)	4,780	8,271	(3,335)
Net income	55,419	75,126	85,377
Less: Net income attributable to non-controlling interest	365	90	0
Net income attributable to EVERTEC, Inc.’s common stockholders	55,054	75,036	85,377
Other comprehensive income (loss), net of tax of $122, $176 and $8
Foreign currency translation adjustments	(635)	(3,360)	(545)
Gain (loss) on cash flow hedge	2,178	(1,449)	(515)
Total comprehensive income attributable to EVERTEC, Inc.’s common stockholders	$ 56,597	$ 70,227	$ 84,317
Net income per common share - basic attributable to EVERTEC, Inc.’s common stockholders (in usd per share)	$ 0.76	$ 1.01	$ 1.11
Net income per common share - diluted attributable to EVERTEC, Inc.’s common stockholders (in usd per share)	0.76	1.01	1.11
Cash dividends declared per share (in usd per share)	$ 0.30	$ 0.4	$ 0.40