XML 162 R103.htm IDEA: XBRL DOCUMENT v3.20.4
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Items Included in Accumulated Other Comprehensive Income (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Pension Plan [Member]    
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS    
Prior service cost $ 0 $ 0
Net actuarial loss (gain) 277,000 255,000
Total 277,000 255,000
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year 19,000  
Defined Benefit Plan, Accumulated Benefit Obligation 1,101,000 976,000
Other Postretirement Benefits Plan [Member]    
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS    
Prior service cost (217,000) (248,000)
Net actuarial loss (gain) (211,000) (236,000)
Total (428,000) $ (484,000)
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year 5,000  
Defined Benefit Plan, Expected Amortization of Prior Service Cost (Credit), Next Fiscal Year $ 31,000