EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Supplemental Employee Retirement Plan [Member]
Net periodic pension cost
Service cost	$ 126	$ 116	$ 252	$ 232
Interest cost	98	115	195	230
Recognized net actuarial loss	194	156	389	312
Net period benefit cost	418	387	836	774
Other Postretirement Benefit Plan
Net periodic pension cost
Service cost	6	7	13	14
Interest cost	25	31	51	62
Recognized net actuarial loss	29	20	58	39
Amortization of prior service credit	(6)	(6)	(12)	(12)
Net period benefit cost	$ 54	$ 52	$ 110	$ 103