EMPLOYEE BENEFIT PLANS (Components of the net periodic benefit cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Components of Net Periodic Benefit Costs:
Pension Settlement	$ 169	$ 2,000	$ 378	$ 2,000
Defined Benefit Pension Plan [Member]
Components of Net Periodic Benefit Costs:
Service Cost	1,572	1,743	3,145	3,486
Interest Cost	1,166	1,221	2,333	2,442
Expected Return on Plan Assets	(2,675)	(2,787)	(5,351)	(5,574)
Prior Service Cost Amortization	4	4	8	8
Net Loss Amortization	428	1,691	857	3,382
Pension Settlement	169	2,000	378	2,000
Net Periodic Benefit Cost	$ 664	$ 3,872	$ 1,370	$ 5,744
Discount Rate	3.11%	2.88%	3.11%	2.88%
Long-Term Rate of Return on Assets	6.75%	6.75%	6.75%	6.75%
Supplemental Executive Retirement Plan [Member]
Components of Net Periodic Benefit Costs:
Service Cost	$ 8	$ 9	$ 16	$ 18
Interest Cost	79	61	158	120
Prior Service Cost Amortization	69	69	138	88
Net Loss Amortization	180	243	360	441
Net Periodic Benefit Cost	$ 336	$ 382	$ 672	$ 667
Discount Rate	2.80%	2.38%	2.80%	2.38%