LOAN PORTFOLIO - Activity for Specific Reserve (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Specific Reserve:
Balance at beginning of period	$ 86,372	$ 49,918	$ 52,581	$ 55,205
Provision for loan losses	16,619	9,439	70,011	81,796
Financing Receivable Allowance For Credit Losses Net Write Offs Impaired Loans	(30,309)	(7,498)	(49,910)	(85,142)
Balance at end of period	$ 72,682	$ 51,859	$ 72,682	$ 51,859