v3.21.2
Equity-Based Compensation - Fair Value of the Predecessor Promissory Notes (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 21, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Grant date fair value of shares vested $ 9 $ 23
Predecessor Promissory Notes    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Grant date fair value of shares vested $ 12 $ 228