Summary of Significant Accounting Policies - Additional Information (Detail)	6 Months Ended			1 Months Ended	3 Months Ended
	Jun. 30, 2011	Jun. 30, 2011 EVERTEC, Inc	Mar. 31, 2011 EVERTEC, Inc	Apr. 30, 2010 Federal Deposit Insurance Corporation	Jun. 30, 2011 Federal Deposit Insurance Corporation	Mar. 31, 2011 Federal Deposit Insurance Corporation
Significant Accounting Policies [Line Items]
Unconsolidated investments generally accounted for by the equity method, minimum ownership	20.00%
Description of Investments generally carried under the cost method of accounting	Investments, in which there is less than 20% ownership, are generally carried under the cost method of accounting, unless significant influence is exercised.
Ownership interest		49.00%	49.00%
FDIC Loss sharing agreements, reimbursement percentage				80.00%	80.00%	80.00%