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Assumptions used to Estimate Fair Value of Stock Option Granted (Parenthetical) (Detail) (Scenario, Adjustment, USD $) | 1 Months Ended | 12 Months Ended
--- | --- | ---
May 09, 2012 | Dec. 31, 2012
Scenario, Adjustment |  |
Share based Compensation Arrangement Assumptions Used to Estimate Fair Values of Share Options Granted [Line Items] |  |
Equitable adjustment to reduce exercise price | $ 3.71 | $ 3.71

X
- Definition Equitable Adjustment that reduced the stock options exercise price. + References No definition available. + Details
Name: | evtc_EquitableAdjustmentToExercisePrice
Namespace Prefix: | evtc_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | evtc_ShareBasedCompensationArrangementAssumptionsUsedToEstimateFairValuesOfShareOptionsGrantedLineItems
Namespace Prefix: | evtc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration