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DEFERRED COMPENSATION (Details) - SERP - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
DEFERRED COMPENSATION      
Deferred compensation liability $ 13,589   $ 12,789
Deferred compensation expense $ 970 $ 125  
Period over which SERP benefit payments to be paid 30 years