Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Composition of the Allowance for Credit Losses (Details)

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Summary of Significant Accounting Policies - Composition of the Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Balance at beginning of period $ 39,713 $ 14,948 $ 16,546 $ 9,398
Provision for credit losses 249 1,566 24,169 2,910
Direct write-offs charged against the allowance (253) (110) (1,006) (971)
Balance at end of period $ 39,709 $ 16,404 $ 39,709 16,404
Adjustment due to Adoption of New ASU        
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Balance at beginning of period       $ 5,067