Cover - shares	9 Months Ended
	Sep. 30, 2021	Oct. 20, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-35872
Entity Registrant Name	EVERTEC, Inc.
Entity Incorporation, State or Country Code	PR
Entity Tax Identification Number	66-0783622
Entity Address, Address Line One	Cupey Center Building,
Entity Address, Address Line Two	Road 176, Kilometer 1.3,
Entity Address, City or Town	San Juan,
Entity Address, State or Province	PR
Entity Address, Postal Zip Code	00926
City Area Code	787
Local Phone Number	759-9999
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	EVTC
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		71,969,856
Entity Central Index Key	0001559865
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false