AMOUNT RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Accumulated Comprehensive income reclassified from AOCI [Line Items]
Realized gain (loss) on securities available-for-sale	$ (313)	$ 2	$ (744)	$ (55)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	105	106	307	308
Defined Benefit Plan, Amortization of Gain (Loss)	(672)	(625)	(1,938)	(1,709)
Other Comprehensive Income, Reclassification, Amortization of Defined Benefit Plans items, Pre-tax	(567)	(519)	(1,631)	(1,401)
Total	$ (880)	$ (517)	$ (2,375)	$ (1,456)