Transaction and service payment and their impact on the results of operations between the Corporation and EVERTEC (Detail) (Equity Method Investee Member, E V E R T E C Inc [Member], 100%, USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Interest Income Member
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	$ 1,638	$ 825	$ 2,491	$ 1,648
Other Interest Income Member
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	306	962	1,269	1,925
Interest Expense Member
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	(30)	(64)	(57)	(174)
Other Fee Revenue [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	6,364	6,420	12,389	12,273
Net Gain Loss And Valuation Adjustments On Investment Securities [Member]
Related Party Transaction [Line Items]
Related Party Transaction Revenues From Transactions With Related Party	5,856		5,856
Other Income [Member]
Related Party Transaction [Line Items]
Related Party Transaction Revenues From Transactions With Related Party	9,854		9,854
Occupancy Net Member
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	1,683	1,673	3,364	3,355
Professional Fees [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	(38,399)	(37,855)	(76,275)	(74,514)
Other Operating Expense [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	226	190	430	403
Total [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	$ (12,502)	$ (27,849)	$ (40,679)	$ (55,084)