RETIREMENT PLANS - Amounts in Consolidated Financials (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Pension Plans
Amounts recognized on the consolidated balance sheets
Other Liabilities		$ 540
Other Assets	$ 580	1,913
Accumulated other comprehensive income (loss), net of tax	(158)	1,484
Amounts recognized in accumulated other comprehensive loss
Unrecognized net actuarial gain	(1,159)	540
Accumulated other comprehensive income, pre-tax	(1,159)	540
Accumulated other comprehensive income (loss), net of tax	(158)	1,484
Postretirement Benefits
Amounts recognized on the consolidated balance sheets
Accrued and current liabilities	381	340
Other Liabilities	5,129	4,559
Accumulated other comprehensive income (loss), net of tax	(411)	359
Amounts recognized in accumulated other comprehensive loss
Unrecognized net actuarial gain	(411)	359
Accumulated other comprehensive income, pre-tax	(411)	359
Accumulated other comprehensive income (loss), net of tax	$ (411)	$ 359