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Accrued Expenses and Other Liabilities - Summary of Accrued Expenses and Other Liabilities (Detail) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Payables and Accruals [Abstract] |  |
Sales and marketing | $ 51,596 | $ 22,938
Compensation and benefits | 21,421 | 21,156
Income taxes | 14,050 | 389
Operating lease liabilities | 7,221 | 6,708
Manufacturing costs | 4,175 | 3,641
Billings in excess of revenues | 1,923 | 1,244
Customer deposits | 577 | 1,174
Other | 4,230 | 5,081
Total accrued expenses and other liabilities | $ 105,193 | $ 62,331

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