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EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Stock Based Compensation Paragraphs (Details) - USD ($)	1 Months Ended	12 Months Ended
	Jan. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
STOCK-BASED COMPENSATION PLANS
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term			1 year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value			$ 25,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			76,000	$ 97,000	$ 128,000
Share-based Payment Arrangement, Expense			1,260,000	1,214,000	1,050,000
Forecast
STOCK-BASED COMPENSATION PLANS
Share-based Payment Arrangement, Expense		$ 1,500,000
Share-based Payment Arrangement, Option [Member]
STOCK-BASED COMPENSATION PLANS
Share-based Payment Arrangement, Expense			0	0	0
Restricted Stock
STOCK-BASED COMPENSATION PLANS
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total			$ 1,678,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			1 year 4 months 24 days
Granted (in shares)			78,243
Share-based Payment Arrangement, Expense			$ 1,260,000	$ 1,214,000	$ 1,050,000
Stock Incentive Plan
STOCK-BASED COMPENSATION PLANS
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			850,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			52,128
Stock Incentive Plan \| Share-based Payment Arrangement, Option [Member]
STOCK-BASED COMPENSATION PLANS
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			6 months
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years
Stock Incentive Plan \| Restricted Stock \| Subsequent event
STOCK-BASED COMPENSATION PLANS
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Granted (in shares)	42,788
Stock Incentive Plan \| Restricted Stock \| Employees
STOCK-BASED COMPENSATION PLANS
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			3 years	3 years
Stock Incentive Plan \| Performance Shares \| Employees
STOCK-BASED COMPENSATION PLANS
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			3 years	3 years
Independent Directors Stock Incentive Plan
STOCK-BASED COMPENSATION PLANS
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			235,000
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			87,520
Independent Directors Stock Incentive Plan \| Restricted Stock \| Subsequent event
STOCK-BASED COMPENSATION PLANS
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	1 year
Granted (in shares)	11,000
Independent Directors Stock Incentive Plan \| Restricted Stock \| Director [Member]
STOCK-BASED COMPENSATION PLANS
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			1 year	1 year