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Condensed Statements of Income (Loss) and Comprehensive Income (Loss) (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
As Restated [Member]
Condensed Financial Statements, Captions [Line Items]
Net income loss, period increase (decrease)	$ (1.4)	$ (2.5)

X

- Definition

Net income loss increase decrease.

+ References

No definition available.

+ Details

Name:	evtc_NetIncomeLossIncreaseDecrease
Namespace Prefix:	evtc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_CondensedFinancialStatementsCaptionsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_RestatementAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: