LOAN PORTFOLIO - Activity for Specific Reserve (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Specific Reserve:
Related Allowance	$ 64,421	$ 52,581	$ 55,205	$ 102,601
Provision for loan losses	78,695	91,515	58,758
Net Charge-offs	(66,855)	(94,139)	(106,154)
Impaired Financing Receivable Related Allowance	$ 64,421	$ 52,581	$ 55,205	$ 102,601