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Convertible Preferred Stock and Stockholders' Equity (Details) $ / shares in Units, $ in Millions |  |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 15, 2025 USD ($) $ / shares shares | Nov. 20, 2024 USD ($) $ / shares shares | May 14, 2024 shares | Apr. 23, 2024 shares | Mar. 20, 2024 USD ($) $ / shares shares | Mar. 18, 2024 shares | Dec. 11, 2023 shares | Sep. 30, 2025 USD ($) $ / shares shares | Jun. 30, 2024 shares | Mar. 31, 2024 shares | Sep. 30, 2025 USD ($) $ / shares shares | Dec. 31, 2024 USD ($) $ / shares shares | Jun. 30, 2025 shares | Mar. 31, 2025 shares | Feb. 28, 2025 USD ($) | Sep. 30, 2024 shares | Sep. 06, 2024 USD ($) | Apr. 25, 2024 shares | Apr. 24, 2024 shares | Dec. 31, 2023 shares | Jun. 22, 2023
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exchange of Series A non-voting convertible preferred stock into common stock (in shares) |  |  |  |  |  |  |  |  | 3,640,000 |  |  |  |  |  |  |  |  |  |  |  |
Shares converted (in shares) |  |  |  |  |  |  |  |  | 10,198,000 |  |  |  |  |  |  |  |  |  |  |  |
Conversion Of Series B Non-Voting Convertible Preferred Stock | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares converted (in shares) |  |  | 10,198,320 |  |  |  |  |  |  |  | 10,198,320 |  |  |  |  |  |  |  |  |  |
At-The-Market Offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, authorized amount | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500.0 |  |  |  |
Series A Non Voting Convertible Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock issued and outstanding (as percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30.00%
Exchange of Series A non-voting convertible preferred stock into common stock (in shares) |  |  |  | 90,992 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, outstanding (in shares) |  |  |  |  |  |  |  | 346,045 |  |  | 346,045 | 346,045 |  |  |  |  |  | 346,045 | 346,045 |  |
Number of common shares issuable upon conversion (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,841,800 |  |
Series A Non Voting Convertible Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exchange of Series A non-voting convertible preferred stock into common stock (in shares) |  |  |  |  |  |  |  |  | (91,000) |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, outstanding (in shares) |  |  |  |  |  |  |  | 346,000 | 346,000 | 437,000 | 346,000 | 346,000 | 346,000 | 346,000 |  | 346,000 |  |  |  | 437,000 |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exchange of Series A non-voting convertible preferred stock into common stock (in shares) |  |  |  | 3,639,680 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock | At-The-Market Offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, proceeds received | $ |  |  |  |  |  |  |  |  |  |  |  | $ 20.5 |  |  |  |  |  |  |  |  |
Sale of stock, authorized amount | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500.0 |  |  |  |  |  |
Sale of stock, aggregate offering price | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200.0 |  |  |  |
Number of shares of common stock sold (in shares) |  |  |  |  |  |  |  | 0 |  |  |  | 777,432 |  |  |  |  |  |  |  |  |
Sale of stock, remaining authorized amount | $ |  |  |  |  |  |  |  | $ 179.1 |  |  | $ 179.1 |  |  |  |  |  |  |  |  |  |
Common Stock | At-The-Market Offering | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, aggregate offering price | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 179.1 |  | $ 179.1 |  |  |  |
Common Stock | November 2024 Underwritten Offering |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) | $ / shares |  | $ 27.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, proceeds received | $ |  | $ 215.9 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Placement agent and other offering costs | $ |  | $ 14.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock sold (in shares) |  | 8,366,250 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock | October 2025 Underwritten Offering | Subsequent Events |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) | $ / shares | $ 18.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, proceeds received | $ | $ 296.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Placement agent and other offering costs | $ | $ 19.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock sold (in shares) | 17,094,594 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series B Non Voting Convertible Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, outstanding (in shares) |  |  |  |  |  |  |  | 16,667 |  |  | 16,667 | 16,667 |  |  |  |  |  |  |  |  |
Number of common shares issuable upon conversion (in shares) |  |  |  |  |  |  |  | 666,680 |  |  | 666,680 |  |  |  |  |  |  |  |  |  |
Issuance of non-voting convertible preferred stock (in shares) |  |  |  |  | 121,625 | 271,625 | 150,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion basis |  |  |  |  | 40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, not automatically converted, outstanding (in shares) |  |  |  |  |  |  |  | 16,667 |  |  | 16,667 |  |  |  |  |  |  |  |  |  |
Series B Non Voting Convertible Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, outstanding (in shares) |  |  |  |  |  |  |  | 17,000 | 17,000 | 0 | 17,000 | 17,000 | 17,000 | 17,000 |  | 17,000 |  |  |  | 0 |
Issuance of non-voting convertible preferred stock (in shares) |  |  |  |  |  |  |  |  |  | 122,000 |  |  |  |  |  |  |  |  |  |  |
Shares converted (in shares) |  |  |  |  |  |  |  |  | (255,000) |  |  |  |  |  |  |  |  |  |  |  |
Series B Non Voting Convertible Preferred Stock | Conversion Of Series B Non-Voting Convertible Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares converted (in shares) |  |  | 254,958 |  |  |  |  |  |  |  | 254,958 |  |  |  |  |  |  |  |  |  |
Series B Non Voting Convertible Preferred Stock | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beneficial holders owned (as percent) |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |
Series B Non Voting Convertible Preferred Stock | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beneficial holders owned (as percent) |  |  |  |  |  |  |  |  |  |  | 19.90% |  |  |  |  |  |  |  |  |  |
Series B Non Voting Convertible Preferred Stock | Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in dollars per share) | $ / shares |  |  |  |  | $ 1,480 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, proceeds received | $ |  |  |  |  | $ 168.9 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Placement agent and other offering costs | $ |  |  |  |  | $ 11.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock and Series B Non Voting Convertible Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion basis |  |  |  |  | 40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding Parapyre warrants | 2024 Parapyre Option Obligation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase shares (in shares) |  |  |  |  |  |  |  | 1,532,591 |  |  | 1,532,591 | 848,184 |  |  |  |  |  |  |  |  |
Exercise price per warrant (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 22.49 |  |  | $ 22.49 | $ 23.28 |  |  |  |  |  |  |  |  |
Number of warrants exercised (in shares) |  |  |  |  |  |  |  | 0 |  |  | 0 |  |  |  |  |  |  |  |  |  |

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