XML 86 R73.htm IDEA: XBRL DOCUMENT v3.20.4
Stock Based Compensation - Cash Performance Units (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2017
Number of Cash Performance Units    
Outstanding units 0  
Cash payments made $ 68  
Cash Performance    
Number of Cash Performance Units    
Granted (in shares)   932,837
Fair value of units granted   $ 663
Vesting period 3 years