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Related Party Transactions - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Related Party Transaction [Line Items]        
Proceeds from capital contributions     $ 200 $ 1,087
Affiliated Entity        
Related Party Transaction [Line Items]        
Proceeds from capital contributions $ 0 $ 0 $ 200 $ 1,100