EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Supplemental Employee Retirement Plan [Member]
Net periodic pension cost
Service cost	$ 126	$ 116	$ 378	$ 348
Interest cost	97	116	292	346
Recognized net actuarial loss	194	155	583	467
Net period benefit cost	417	387	1,253	1,161
Other Postretirement Benefit Plan
Net periodic pension cost
Service cost	7	7	20	21
Interest cost	26	31	77	92
Recognized net actuarial loss	29	20	87	59
Amortization of prior service credit	(6)	(6)	(18)	(18)
Net period benefit cost	$ 56	$ 52	$ 166	$ 154