AMOUNT RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Accumulated Comprehensive income reclassified from AOCI [Line Items]
Realized gain (loss) on securities available-for-sale	$ (265)	$ 2	$ (431)	$ (57)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	102	102	202	202
Defined Benefit Plan, Amortization of Gain (Loss)	(641)	(559)	(1,266)	(1,084)
Other Comprehensive Income, Reclassification, Amortization of Defined Benefit Plans items, Pre-tax	(539)	(457)	(1,064)	(882)
Total	$ (804)	$ (455)	$ (1,495)	$ (939)