Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Significant Accounting Policies - Accounts Receivable (Details)

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Basis of Presentation and Significant Accounting Policies - Accounts Receivable (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Balance at beginning of period $ 30,139 $ 5,154
Additions charged to bad debt expense 41,799 22,705
Additions charged to revenue 27,071  
Additions charged to other selling, general and administrative expense 273 3,950
Additions charged to other (expense) income, net - related parties 515 1,427
Additions charged to other income (expense), net 1,394  
Recoveries of receivables previously charged to bad debt expense (149) (747)
Deductions for uncollectible receivables written off (82,426) (2,350)
Balance at end of period $ 18,616 $ 30,139