DERIVATIVES AND HEDGING (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative net liability position	$ 32,700	$ 48,600
Collateral posted	49,700	47,100
Offsetting Assets and Liabilities [Line Items]
Derivative Liabilities, Amounts offset in the Statement of Financial Condition	(10,205)	(16,868)
Interest rate swaps [Member]
Offsetting Assets and Liabilities [Line Items]
Derivative Liabilities, Amounts offset in the Statement of Financial Condition	$ (10,205)	$ (16,868)