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Stockholders' Equity: - Series B Common Stock Warrants (Details) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2026 USD ($) Y | Mar. 31, 2025 USD ($) | Dec. 31, 2025 USD ($) | Nov. 17, 2022 shares
Stockholders' Equity: |  |  |  |
Fair value of warrants | $ 15,000 |  | $ 9,000 |
Gain (loss) on change in fair value of the warrant liability | 6,000 | $ (1,351,000) |  |
Series B Warrants |  |  |  |
Stockholders' Equity: |  |  |  |
Fair value of warrants | 15,000 |  |  |
Gain (loss) on change in fair value of the warrant liability | $ 6,000 | $ 1,351,000 |  |
Series B Broker Warrants |  |  |  |
Stockholders' Equity: |  |  |  |
Warrants to purchase shares of common stock | shares |  |  |  | 2,323
Expected dividend yield | Series B Warrants |  |  |  |
Stockholders' Equity: |  |  |  |
Warrants, measurement input | 0 |  |  |
Expected term | Series B Warrants |  |  |  |
Stockholders' Equity: |  |  |  |
Warrants, measurement input | Y | 1.64 |  |  |
Equity volatility | Series B Warrants |  |  |  |
Stockholders' Equity: |  |  |  |
Warrants, measurement input | 1.35 |  |  |
Risk-free interest rate | Series B Warrants |  |  |  |
Stockholders' Equity: |  |  |  |
Warrants, measurement input | 0.0368 |  |  |

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