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Stock-Based Compensation, Restricted Stock (Details) - Restricted Stock - 2024 Directors Restricted Stock Plan - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2025 | Dec. 31, 2024 | May 16, 2024
Stock-Based Compensation |  |  |  |  |  |
Total shares available for granting under plan | 461,640 |  |  | 461,640 |  | 500,000
Restricted share activity |  |  |  |  |  |
Restricted shares outstanding at the beginning of the period (in shares) | 16,520 | 21,840 | 21,840 | 21,840 |  |
Restricted shares granted (in shares) | 0 | 16,520 | 0 |  |  |
Shares vested and issued (in shares) |  | (21,840) |  |  |  |
Restricted shares outstanding at the end of the period (in shares) | 16,520 | 16,520 | 21,840 | 16,520 | 21,840 |
Fair Value at Grant Date |  |  |  |  |  |
Fair value at the grant date, restricted shares outstanding at the beginning of the period (in dollars per share) | $ 86.88 | $ 65.96 | $ 65.96 | $ 65.96 |  |
Fair value of restricted shares vested and issued (in dollars per share) |  | 65.96 |  |  |  |
Fair value of restricted shares granted (in dollars per share) | 0 | 86.88 | 0 |  |  |
Fair value at the grant date, restricted shares outstanding at the end of the period (in dollars per share) | $ 86.88 | $ 86.88 | $ 65.96 | $ 86.88 | $ 65.96 |
Weighted Average Remaining Amortization Term (in years) | 7 months 13 days | 10 months 17 days | 1 month 13 days |  | 4 months 9 days |
Total compensation cost related to non-vested restricted shares not yet recognized (in dollars) | $ 0.9 |  |  | $ 0.9 |  |

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