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Share Based Payments and Employee Benefit Plans - 401(k) Plan (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Share Based Payments and Employee Benefit Plans    
Maximum employee contribution (as a percent) 25.00%  
Percentage of eligible compensation matched by employer 50.00%  
Percentage of employer match of eligible employee compensation 4.00%  
Basic matching contributions recorded $ 751 $ 459
Employer discretionary contributions $ 0 $ 0