Net Income Per Common Share - Reconciliation of Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net income available to EVERTEC, Inc.’s common shareholders	$ 15,979	$ 30,052
Weighted average common shares outstanding (in shares)	65,179,965	64,968,298
Weighted average potential dilutive common shares (in shares)	1,156,714	640,320
Weighted average common shares outstanding - assuming dilution (in shares)	66,336,679	65,608,618
Net income per common share - basic (in usd per share)	$ 0.25	$ 0.46
Net income per common share - diluted (in usd per share)	$ 0.24	$ 0.46
Share awards excluded from the diluted earnings (loss) per share calculation because they would have an anti-dilutive effect (in shares)	400,000	400,000