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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Commitments and Contingencies [Line Items] |  |  |
Rent expense of office facilities and real estate | $ 8.1 | $ 8.2 | $ 7.7
Rent expense for telecommunications and other equipment | 5.4 | $ 6.1 | $ 7.0
Outstanding letter of credit | $ 0.9 |  |
Maximum [Member] |  |  |
Commitments and Contingencies [Line Items] |  |  |
Outstanding letter of credit, maturity term | 3 months |  |

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- Definition Commitments and Contingencies [Line Items] + References No definition available. + Details
Name: | evtc_CommitmentsAndContingenciesLineItems
Namespace Prefix: | evtc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Letters of Credit Obligation Period + References No definition available. + Details
Name: | evtc_LettersOfCreditObligationPeriod
Namespace Prefix: | evtc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rent expense for office facilities and real estate. + References No definition available. + Details
Name: | evtc_RentExpenseForOfficeFacilitiesAndRealEstate
Namespace Prefix: | evtc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Rent expense for telecommunications and other equipment. + References No definition available. + Details
Name: | evtc_RentExpenseForTelecommunicationsAndOtherEquipment
Namespace Prefix: | evtc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |