Impact on the results of operations of transactions between the Corporation and PR Asset Portfolio 2013-1 International, LLC (Detail) - 100% - PR Asset Portfolio 2013-1 International, LLC [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Related Party Transaction [Line Items]
Related Party Transaction Revenues From Transactions With Related Party	$ 746	$ 1,082	$ 1,612	$ 2,414
Loans Member
Related Party Transaction [Line Items]
Interest Income Related Party	747	1,082	1,613	2,344
Other Fee Revenue [Member]
Related Party Transaction [Line Items]
Related Party Transaction Revenues From Transactions With Related Party		$ 0		$ 70
Deposits Member
Related Party Transaction [Line Items]
Interest Expense Related Party	$ (1)		$ (1)