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Related-party Transactions - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Current Liabilities          
Related Party Transaction [Line Items]          
Amounts due to related parties - current $ 0   $ 0   $ 0
Prepaid Expenses and Other Assets          
Related Party Transaction [Line Items]          
Amounts due from related parties 0   0   $ 1
Management Services Agreement | General and Administrative Expense          
Related Party Transaction [Line Items]          
Management fee expense and other expenses to related party $ 71 $ 1,744 $ 142 $ 3,474