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BENEFIT PLANS - Other Deferred Compensation Arrangements (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Deferred Compensation Arrangements [Abstract]      
Deferred compensation arrangements (146,860 shares at December 31, 2021 and 161,457 shares at December 31, 2020) $ 8,362 $ 9,127  
Other Deferred Compensation Arrangements [Member]      
Deferred Compensation Arrangements [Abstract]      
Deferred compensation arrangements (146,860 shares at December 31, 2021 and 161,457 shares at December 31, 2020) 5,100 5,400  
Expense recognized under plan $ 200 $ 400 $ 200