EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Awarded Shares of Restricted Stock Under Stock Incentive Plan (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Restricted Stock | Independent Directors Stock Incentive Plan | Director [Member]
STOCK-BASED COMPENSATION PLANS
Shares awarded (in shares)	11,000	9,588
Restricted Stock | Stock Incentive Plan
STOCK-BASED COMPENSATION PLANS
Shares awarded (in shares)	53,788	78,243
Restricted Stock | Stock Incentive Plan | Employees
STOCK-BASED COMPENSATION PLANS
Shares awarded (in shares)	31,684	51,638
Performance Shares | Stock Incentive Plan | Employees
STOCK-BASED COMPENSATION PLANS
Shares awarded (in shares)	11,104	17,017