LOANS HELD FOR SALE - Portfolio of Loans Held For Sale Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2016	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts Notes And Loans Receivable [Line Items]
Loans held for sale	$ 50,006		$ 50,006	$ 35,869
Non-performing loan sold	$ 16,300	$ 147,500
Transfer Of Loans Held For Sale To Portfolio Loans 1			$ 1,443	$ 40,086	$ 0
Construction Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Non-performing loan sold		11,000
Commercial Mortgage Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Non-performing loan sold		$ 90,700