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Redeemable Convertible Preferred Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 30, 2024 | Jan. 31, 2024 | Oct. 31, 2023 | Mar. 31, 2025 | Dec. 31, 2024 | Jul. 31, 2024
Series G-3 Redeemable Convertible Preferred Stock [Member] |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |
Temporary equity stock issued during the period shares payment of dividend in kind |  | 66,465 |  |  |  |
Series G-4 Redeemable Convertible Preferred Stock [Member] |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |
Temporary equity stock issued during the period shares payment of dividend in kind |  | 10,666 |  |  |  |
Temporary equity stock issued during the period shares new issues |  |  | 785,245 |  |  |
Proceeds from redeemable convertible preferred stock |  |  | $ 45.0 |  |  |
Temporary equity par or stated value per share |  |  | $ 0.0001 |  |  |
Temporary equity special payment as a percentage of original issue price |  |  | 5.00% |  |  |
Aggregate trading period for determining special price payable to the holders of temporary equity |  |  | 10 days |  |  |
Common stock average price as percentage of issue price maximum |  |  | 110.00% |  |  |
Series G-4 Redeemable Convertible Preferred Stock [Member] | Accrued Liabilities [Member] |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |
Special price paid in cash |  |  |  |  |  | $ 2.3
Series G-5 Redeemable Convertible Preferred Stock [Member] |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |
Temporary equity stock issued during the period shares new issues | 3,489,981 |  |  |  |  |
Proceeds from redeemable convertible preferred stock | $ 200.0 |  |  |  |  |
Temporary equity par or stated value per share | $ 0.0001 |  |  |  |  |
Common Class A [Member] |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |
Common stock shares outstanding |  |  |  | 167,989,074 | 157,076,972 |
Temporary equity converted into permanent equity shares |  |  |  | 71,976,178 |  |
Common Class B [Member] |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |
Common stock shares outstanding |  |  |  | 5,043,789 | 5,043,789 |

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