ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (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
Activity in accumulated other comprehensive loss, net of tax
Balance, Begining			$ (44,142)	$ (28,181)
Other comprehensive (loss) income during the period	$ (1,304)	$ (457)	(585)	2,468
Balance, Ending	(44,727)	(25,713)	(44,727)	(25,713)
Interest Rate Swap [Member]
Activity in accumulated other comprehensive loss, net of tax
Balance, Begining			428	0
Other comprehensive (loss) income during the period			1,029	39
Balance, Ending	1,457	39	1,457	39
Securities Available for Sale [Member]
Activity in accumulated other comprehensive loss, net of tax
Balance, Begining			2,700	864
Other comprehensive (loss) income during the period			(3,249)	2,429
Balance, Ending	(549)	3,293	(549)	3,293
Retirement Plans [Member]
Activity in accumulated other comprehensive loss, net of tax
Balance, Begining			(47,270)	(29,045)
Other comprehensive (loss) income during the period			1,635	0
Balance, Ending	$ (45,635)	$ (29,045)	$ (45,635)	$ (29,045)