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v3.25.1

Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 14, 2023 | Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024 | Aug. 01, 2023 | Jun. 30, 2022 | Jul. 15, 2019
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Exercise of warrants (in shares) |  | 0 | 0 |  |  |  |
Warrants and rights outstanding |  |  |  |  |  | $ 5,874 |
First Additional Warrant Offering |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Warrants issued (in shares) |  | 1,683,784 |  |  |  |  |
Fair value of warrants |  |  |  |  |  |  | $ 735
Warrant exercise price (in dollars per share) |  | $ 4.25 |  | $ 5.38 |  |  |
Class of warrant or right, outstanding (in shares) |  | 1,571,429 |  | 112,355 |  |  |
Initial Warrant Offering |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Fair value of warrants |  |  |  |  |  |  | $ 6,800
Pre-Funded Warrants |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Warrants issued (in shares) |  |  |  |  |  | 4,000,000 |
Common Stock Warrants |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Warrants issued (in shares) |  |  |  |  |  | 8,850,000 |
Warrants issued to purchase common stock (in shares) | 3,689,452 |  |  |  |  |  |
Proceeds from warrant exercises | $ 3,542 |  |  |  |  |  |
Existing Warrants |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  |  |  |  | $ 0.96 |  |
Class of warrant or right, outstanding (in shares) |  |  |  |  | 5,000,000 |  |
New Warrants |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Warrants issued (in shares) |  |  |  |  | 2,750,000 |  |
Warrant exercise price (in dollars per share) |  |  |  |  | $ 2.60 |  |
Warrants and rights outstanding |  |  |  |  | $ 4,671 |  |
Warrants, $0.96 Exercise Price |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Warrants issued (in shares) |  | 160,548 |  |  |  |  |
Warrant exercise price (in dollars per share) |  | $ 0.96 |  |  |  |  |
Warrants, $4.25 Exercise Price |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  | $ 4.25 |  |  |  |  |
Class of warrant or right, outstanding (in shares) |  | 1,571,429 |  |  |  |  |
Warrants, $5.38 Exercise Price |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  | $ 5.38 |  |  |  |  |
Minimum | Common Stock Warrants |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Warrant exercise price (in dollars per share) |  |  |  |  |  | $ 0.96 |
Maximum | First Additional Warrant Offering |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Warrants issued (in shares) |  |  |  |  |  |  | 2,143,000
Senior secured notes due 2025 |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Interest rate |  | 12.50% |  |  |  |  | 12.50%

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