XML 117 R102.htm IDEA: XBRL DOCUMENT v3.20.4
DEFERRED COMPENSATION (Details) - SERP - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
DEFERRED COMPENSATION      
Deferred compensation liability $ 0 $ 12,789  
Deferred compensation expense $ 1,660 $ 4,291 $ 505
Period over which SERP benefit payments to be paid 30 years