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Operating expenses, Stock Compensation Expenses (Details) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2025 USD ($) shares $ / shares | Dec. 31, 2024 USD ($) shares $ / shares | Dec. 31, 2023 USD ($) shares $ / shares
Operating expense [Abstract] |  |  |
Expense recognized from stock compensation | $ | $ 4,356 | $ 4,240 | $ 3,313
Stock compensation expense [Abstract] |  |  |
Contractual life for outstanding stock compensation series | 10 months 9 days |  |
Vesting Price One [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares | $ 10.94 | $ 8.25 | $ 8.25
Number of shares vested (in shares) | shares | 266,953 | 212,042 | 24,163
Vesting Price Two [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares | $ 9.33 | $ 5.52 | $ 8.22
Number of shares vested (in shares) | shares | 101,349 | 129,205 | 123,444
Vesting Price Three [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares | $ 9.12 | $ 5.3 | $ 5.52
Number of shares vested (in shares) | shares | 49,635 | 123,698 | 107,733
Vesting Price Four [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares | $ 8.25 |  | $ 5.38
Number of shares vested (in shares) | shares | 126,057 |  | 198,745
Vesting Price Five [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares | $ 8.04 |  | $ 5.3
Number of shares vested (in shares) | shares | 53,205 |  | 102,045
Vesting Price Six [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares | $ 6.72 |  |
Number of shares vested (in shares) | shares | 40,968 |  |
Vesting Price Seven [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares | $ 5.3 |  |
Number of shares vested (in shares) | shares | 142,526 |  |
Vesting Price Eight [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares | $ 4.29 |  |
Number of shares vested (in shares) | shares | 35,610 |  |

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