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EMPLOYEE BENEFIT PLANS - Accumulated Benefit Obligations (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Retirement Benefits [Abstract]    
Projected benefit obligation $ 93,799 $ 100,469
Accumulated benefit obligation 93,799 100,469
Accumulated postretirement benefit obligation 1,890 1,886
Fair value of plan assets $ 85,079 $ 78,883