DERIVATIVES (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Values of Derivative Instruments
Derivative assets	$ 83,780	$ 79,834
Derivative liabilities	82,323	81,892
Derivative instruments designated as hedging instruments
Fair Values of Derivative Instruments
Notional Amount	131,391	199,503
Derivative assets	4,325	2,365
Derivative liabilities	5,976	5,213
Derivative instruments designated as hedging instruments | Interest rate swaps on certificates of deposit
Fair Values of Derivative Instruments
Notional Amount	48,365	112,913
Derivative assets	0	0
Derivative liabilities	5,976	5,213
Derivative instruments designated as hedging instruments | Foreign currency forward contracts
Fair Values of Derivative Instruments
Notional Amount	83,026	86,590
Derivative assets	4,325	2,365
Derivative liabilities	0	0
Derivative instruments not designated as hedging instruments
Fair Values of Derivative Instruments
Notional Amount	8,507,660	7,190,926
Derivative assets	79,455	77,469
Derivative liabilities	76,347	76,679
Derivative instruments not designated as hedging instruments | Interest rate swaps and options
Fair Values of Derivative Instruments
Notional Amount	7,668,482	6,494,900
Derivative assets	67,578	67,215
Derivative liabilities	65,131	67,325
Derivative instruments not designated as hedging instruments | Foreign exchange contracts
Fair Values of Derivative Instruments
Notional Amount	767,764	652,993
Derivative assets	11,874	10,254
Derivative liabilities	11,213	9,350
Derivative instruments not designated as hedging instruments | Credit risk participation agreements (“RPAs”)
Fair Values of Derivative Instruments
Notional Amount	71,414	43,033
Derivative assets	3	0
Derivative liabilities	$ 3	$ 4