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Revenues - Balances Related to Enforceable Contracts (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Disaggregation of Revenue [Abstract] |  |  |
Accounts receivable | $ 13,957 | $ 2,730 |
Contract assets | 2,490 | 2,045 |
Contract liabilities | $ 59,749 | $ 26,132 | $ 10,211

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