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EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Stock Based Compensation Paragraphs (Details) - USD ($)	1 Months Ended	12 Months Ended
	Jan. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
STOCK-BASED COMPENSATION PLANS
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term			1 year 10 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value			$ 63,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			128,000	$ 276,000
Share-based Payment Arrangement, Expense			1,050,000	798,000
Forecast
STOCK-BASED COMPENSATION PLANS
Share-based Payment Arrangement, Expense		$ 1,400,000
Share-based Payment Arrangement, Option [Member]
STOCK-BASED COMPENSATION PLANS
Share-based Payment Arrangement, Expense			0	0
Restricted Stock
STOCK-BASED COMPENSATION PLANS
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total			$ 1,340,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			1 year 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			70,940
Share-based Payment Arrangement, Expense			$ 1,050,000	$ 798,000
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			166,603
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
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	63,402
Stock Incentive Plan | Restricted Stock | Employees [Member]
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 [Member]
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			103,143
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
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	10,989
Independent Directors Stock Incentive Plan | Restricted Stock | Director
STOCK-BASED COMPENSATION PLANS
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			1 year	1 year

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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