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Summary of Significant Accounting Policies - Reconciliation of Accounts Receivable - Classified (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Reconciliation of accounts receivable - classified |  |
Accounts receivable | $ 1,748,306 | $ 840,390
Less: allowances for returns and credit losses | (39,510) | (17,637)
Accounts receivable, net | $ 1,708,796 | $ 822,753

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