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Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2021 | Sep. 30, 2021 | Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract] |  |  |
Goodwill impairment |  | $ 0 | $ 0
Goodwill [Line Items] |  |  |
Deferred revenue, recognized |  | $ 800,000 |
Circle [Member] |  |  |
Goodwill [Line Items] |  |  |
Contract termination date |  | Apr. 15, 2021 |
Deferred revenue, recognized | $ 600,000 |  |
Amortization of intangible assets remaining | $ 300,000 |  |
Finite lived intangible assets remaining amortization |  | $ 400,000 |
Circle [Member] | Selling and Marketing Expense [Member] |  |  |
Goodwill [Line Items] |  |  |
Impairment charge of intangible assets |  | $ 1,500,000 |

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