Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Roll Forward of Receivable Allowance (Details)

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Summary of Significant Accounting Policies - Roll Forward of Receivable Allowance (Details) - USD ($)
$ in Thousands
4 Months Ended 8 Months Ended 12 Months Ended
Dec. 31, 2019
Aug. 31, 2019
Dec. 31, 2020
Dec. 31, 2018
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Balance Beginning of Period $ 0 $ 3,759 $ 3,828 $ 4,162
Charged to Expense 3,828 7,558 8,538 12,300
Write-Offs and Other 0 (11,317) (9,270) (12,703)
Balance End of Period $ 3,828 $ 0 $ 3,096 $ 3,759