RETIREMENT AND POSTRETIREMENT PLANS - Employee Retirement Plan's investments measured at fair value (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	$ 47,857
Expected annual rates of return	7.25%
Percentage of investments for long term growth.	97.00%
Percentage of near term benefit payments	3.00%
Percentage of cumulative long term return on index	9.00%
Percentage of cumulative long term return on bonds	5.00%
Employee Retirement Plan's target allocation, expected annual rate of return	7.25%
Actuarial gain	$ (304)
Retirement Plans [Member] | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,581
Retirement Plans [Member] | U.S. large cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	13,623
Retirement Plans [Member] | U.S. mid cap/small cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	5,669
Retirement Plans [Member] | International
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	8,332
Retirement Plans [Member] | Equities blend
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	900
Retirement Plans [Member] | Corporate
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,696
Retirement Plans [Member] | Government
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,700
Retirement Plans [Member] | Mortgage-backed
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	2,549
Retirement Plans [Member] | High yield bonds and bond funds
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	11,807
Retirement Plans [Member] | Level 1 Inputs [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	30,224
Retirement Plans [Member] | Level 1 Inputs [Member] | U.S. large cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	13,623
Retirement Plans [Member] | Level 1 Inputs [Member] | U.S. mid cap/small cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	5,669
Retirement Plans [Member] | Level 1 Inputs [Member] | International
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	8,332
Retirement Plans [Member] | Level 1 Inputs [Member] | Equities blend
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	900
Retirement Plans [Member] | Level 1 Inputs [Member] | Government
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,700
Retirement Plans [Member] | Level 2 Inputs [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	17,633
Retirement Plans [Member] | Level 2 Inputs [Member] | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,581
Retirement Plans [Member] | Level 2 Inputs [Member] | Corporate
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,696
Retirement Plans [Member] | Level 2 Inputs [Member] | Mortgage-backed
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	2,549
Retirement Plans [Member] | Level 2 Inputs [Member] | High yield bonds and bond funds
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	11,807
Employee Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	$ 28,693	$ 27,142	$ 25,202
Expected annual rates of return	7.00%	7.00%	7.00%
Percentage of investments for long term growth.	97.00%
Percentage of near term benefit payments	3.00%
Percentage of cumulative long term return on index	9.00%
Percentage of cumulative long term return on bonds	5.00%
Employee Retirement Plan's target allocation, expected annual rate of return	7.00%	7.00%
Actuarial gain	$ (903)	$ 2,204
Employee Retirement Plan | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,001	720
Employee Retirement Plan | U.S. large cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	8,579
Employee Retirement Plan | U.S. mid cap/small cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	2,896
Employee Retirement Plan | International
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	3,560
Employee Retirement Plan | Equities blend
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	479
Employee Retirement Plan | Corporate
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,288
Employee Retirement Plan | Government
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,406
Employee Retirement Plan | Mortgage-backed
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,858
Employee Retirement Plan | High yield bonds and bond funds
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	7,626
Employee Retirement Plan | Domestic Large Cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		3,336
Employee Retirement Plan | Domestic Mid Cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		1,571
Employee Retirement Plan | Domestic Small Cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		618
Employee Retirement Plan | International Equity
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		4,678
Employee Retirement Plan | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		8,300
Employee Retirement Plan | Domestic Large Cap.
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		5,564
Employee Retirement Plan | Domestic Mid Cap.
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	28,693	742
Employee Retirement Plan | Domestic Small Cap.
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		1,613
Employee Retirement Plan | Level 1 Inputs [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		19,223
Employee Retirement Plan | Level 1 Inputs [Member] | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		720
Employee Retirement Plan | Level 1 Inputs [Member] | U.S. large cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	8,579
Employee Retirement Plan | Level 1 Inputs [Member] | U.S. mid cap/small cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	2,896
Employee Retirement Plan | Level 1 Inputs [Member] | International
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	3,560
Employee Retirement Plan | Level 1 Inputs [Member] | Equities blend
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	479
Employee Retirement Plan | Level 1 Inputs [Member] | Government
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,406
Employee Retirement Plan | Level 1 Inputs [Member] | Domestic Large Cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		3,336
Employee Retirement Plan | Level 1 Inputs [Member] | Domestic Mid Cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		1,571
Employee Retirement Plan | Level 1 Inputs [Member] | Domestic Small Cap
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		618
Employee Retirement Plan | Level 1 Inputs [Member] | International Equity
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		4,678
Employee Retirement Plan | Level 1 Inputs [Member] | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		8,300
Employee Retirement Plan | Level 1 Inputs [Member] | Domestic Mid Cap.
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	16,920
Employee Retirement Plan | Level 2 Inputs [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		7,919
Employee Retirement Plan | Level 2 Inputs [Member] | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,001
Employee Retirement Plan | Level 2 Inputs [Member] | Corporate
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,288
Employee Retirement Plan | Level 2 Inputs [Member] | Mortgage-backed
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	1,858
Employee Retirement Plan | Level 2 Inputs [Member] | High yield bonds and bond funds
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	7,626
Employee Retirement Plan | Level 2 Inputs [Member] | Domestic Large Cap.
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		5,564
Employee Retirement Plan | Level 2 Inputs [Member] | Domestic Mid Cap.
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets	$ 11,773	742
Employee Retirement Plan | Level 2 Inputs [Member] | Domestic Small Cap.
Defined Benefit Plan Disclosure [Line Items]
Total Plan Assets		$ 1,613