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Stock Compensation - Restricted Stock and Performance Share Grants - Additional Information (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
award_type
Share-based Payment Arrangement [Abstract]  
Number of types of awards | award_type 3
Compensation cost not yet recognized | $ $ 3,054
Weighted-average recognition period of compensation cost 18 months