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Accounts receivable - Additional Information (Detail) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Allowance for doubtful accounts receivable | $ 28,646 | $ 24,857
Unbilled revenue |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable balances | $ 89,745 | $ 149,015

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