Deposits (Additional Information About Corporation's Deposits) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deposits [Abstract]
Deposits from the Certificate of Deposit Account Registry Service (CDARS)	$ 200	$ 2,723
Deposits from foreign sources (primarily Mexico)	769,970	799,504
Deposits from certain directors, executive officers and their affiliates	$ 144,216	$ 158,971