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BENEFIT PLANS - Net Periodic Benefit (Income) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Retirement Benefits [Abstract]        
Service cost $ 0 $ 0 $ 0 $ 0
Interest cost 202 224 404 448
Expected return on plan assets (443) (357) (886) (714)
Net periodic benefit income $ (241) $ (133) $ (482) $ (266)