DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Net Amount Presented in the Balance Sheet	$ 15,112	$ 35,217
Financial Instruments	14,221	16,661
Cash Collateral	0	17,651
Net Amount	891	905
Interest rate contracts - designated [Member]
Derivative [Line Items]
Net Amount Presented in the Balance Sheet	1,248	1,171
Financial Instruments	1,248	1,171
Cash Collateral	0	0
Net Amount	0	0
Interest rate swaps - not designated [Member]
Derivative [Line Items]
Net Amount Presented in the Balance Sheet	13,864	34,046
Financial Instruments	12,973	15,490
Cash Collateral	0	17,651
Net Amount	891	905
Equity contracts - not designated [Member]
Derivative [Line Items]
Net Amount Presented in the Balance Sheet	$ 0	$ 0