Goodwill - Additional Information (Detail)	Sep. 30, 2012
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill impairment test fair value in excess of carrying amount percentage	25.00%

Goodwill Impairment Test, Fair Value In Excess of Carrying Amount, Percentage

No definition available.

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Namespace Prefix:	evtc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant