| Document and Entity Information | Feb. 24, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 24, 2022 |
| Entity Registrant Name | EVERTEC, Inc. |
| Entity Incorporation, State or Country Code | PR |
| Entity File Number | 001-35872 |
| Entity Tax Identification Number | 66-0783622 |
| Entity Address, Address Line One | PO BOX 364527 |
| Entity Address, City or Town | San Juan |
| Entity Address, Country | PR |
| Entity Address, Postal Zip Code | 00926 |
| City Area Code | 787 |
| Local Phone Number | 759-9999 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001559865 |
| Title of 12(b) Security | Common Stock, $0.01 par value per share |
| Trading Symbol | EVTC |
| Security Exchange Name | NYSE |
