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EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Stock Based Compensation Paragraphs (Details) - USD ($) | 1 Months Ended | 12 Months Ended
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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 Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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