EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Items Included in Accumulated Other Comprehensive Income (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Pension Plan
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS
Prior service cost	$ 0	$ 0
Net actuarial loss (gain)	179,000	182,000
Total	179,000	182,000
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year	11,000
Defined Benefit Plan, Accumulated Benefit Obligation	946,000	1,128,000
Other Postretirement Benefits Plan
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS
Prior service cost	(155,000)	(186,000)
Net actuarial loss (gain)	(646,000)	(271,000)
Total	(801,000)	$ (457,000)
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year	36,000
Defined Benefit Plan, Expected Amortization of Prior Service Cost (Credit), Next Fiscal Year	$ 31,000