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Revenue, Credit Concentrations and Geographic Information - Additional Information (Detail) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 USD ($) Segment | Dec. 31, 2020 USD ($)
Concentration Risk And Geographic Information [Line Items] |  |  |
Number of operating business segment | Segment | 1 |  |
Accounts receivable, net | $ 374,937 | $ 448,351 | [1]
Customers |  |  |
Concentration Risk And Geographic Information [Line Items] |  |  |
Accounts receivable, net | $ 83,900 | $ 72,100 |
Credit Concentration Risk | Accounts Receivable | Customer One |  |  |
Concentration Risk And Geographic Information [Line Items] |  |  |
Concentration risk, percentage | 31.00% | 24.00% |
Credit Concentration Risk | Accounts Receivable | Customer Two |  |  |
Concentration Risk And Geographic Information [Line Items] |  |  |
Concentration risk, percentage | 14.00% | 22.00% |
[1] | (1)December 31, 2020 balances were derived from the audited Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed with the SEC on February 26, 2021.

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