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Other Financial Statement Information - Summary of Depreciation and Amortization Expense (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Disclosure Details Of Depreciation And Amortization [Line Items] |  |  |  |
Depreciation and amortization expenses | $ 3,663 | $ 4,827 | $ 7,829 | $ 9,747
Cost of revenue [Member] |  |  |  |
Disclosure Details Of Depreciation And Amortization [Line Items] |  |  |  |
Depreciation and amortization expenses | 1,398 | 1,934 | 3,076 | 3,892
Sales and marketing [Member] |  |  |  |
Disclosure Details Of Depreciation And Amortization [Line Items] |  |  |  |
Depreciation and amortization expenses | 1,323 | 1,762 | 2,798 | 3,611
Technology and development [Member] |  |  |  |
Disclosure Details Of Depreciation And Amortization [Line Items] |  |  |  |
Depreciation and amortization expenses | 584 | 667 | 1,171 | 1,317
General and administrative [Member] |  |  |  |
Disclosure Details Of Depreciation And Amortization [Line Items] |  |  |  |
Depreciation and amortization expenses | $ 358 | $ 464 | $ 784 | $ 927

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