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Proxy Contest and Related Costs (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Jun. 30, 2020
director
board_member
Other Income and Expenses [Abstract]      
Number of board members re-elected | board_member     5
Number of board members | board_member     8
Number of directors elected | director     3
Number of directors | director     8
Proxy contest costs | $ $ 3,105 $ 0