DERIVATIVES AND HEDGING (Derivative Offsetting) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Offsetting Derivative Assets [Abstract]
Derivative Assets, Gross Amounts Recognized	$ 43,506	$ 15,242
Derivative Assets, Amounts offsett in the Statement of Financial Condition	0	(40)
Derivative Assets, Net Amounts in the Statement of Financial Condition	43,506	15,202
Derivative Assets, Netting Adjustment Per Applicable Master Netting Agreements	0	0
Derivative Assets, Fair Value of Financial Collateral in the Statement of Financial Condiation	0	0
Derivative Assets, Net Amount	43,506	15,202
Offsetting Derivative Liabilities [Abstract]
Derivative Liabilities, Gross Amounts Recognized	43,653	15,242
Derivative Liabilities, Amounts offset in the Statement of Financial Condition	(19,726)	(4,276)
Derivative Liabilities, Net Amounts of the Statement of Financial Condition	23,927	10,966
Derivative Liabilities, Net Adjustment Per Applicable Master Netting Agreements	0	0
Derivative Liabilities, Fair Value of Financial Collateral in the Statement of Financial Condition	(23,730)	(15,209)
Derivative Liabilities, Net Amount	197	(4,243)
Interest rate swaps [Member]
Offsetting Derivative Assets [Abstract]
Derivative Assets, Gross Amounts Recognized	43,506	15,242
Derivative Assets, Amounts offsett in the Statement of Financial Condition	0	(40)
Derivative Assets, Net Amounts in the Statement of Financial Condition	43,506	15,202
Derivative Assets, Netting Adjustment Per Applicable Master Netting Agreements	0	0
Derivative Assets, Fair Value of Financial Collateral in the Statement of Financial Condiation	0	0
Derivative Assets, Net Amount	43,506	15,202
Offsetting Derivative Liabilities [Abstract]
Derivative Liabilities, Gross Amounts Recognized	43,653	15,242
Derivative Liabilities, Amounts offset in the Statement of Financial Condition	(19,726)	(4,276)
Derivative Liabilities, Net Amounts of the Statement of Financial Condition	23,927	10,966
Derivative Liabilities, Net Adjustment Per Applicable Master Netting Agreements	0	0
Derivative Liabilities, Fair Value of Financial Collateral in the Statement of Financial Condition	(23,730)	(15,209)
Derivative Liabilities, Net Amount	$ 197	$ (4,243)

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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