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Operating expenses, Stock Compensation Expenses (Details) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2024 USD ($) shares $ / shares | Dec. 31, 2023 USD ($) shares $ / shares | Dec. 31, 2022 USD ($) shares $ / shares
Operating expense [Abstract] |  |  |
Expense recognized from stock compensation | $ | $ 4,240 | $ 3,313 | $ 4,211
Stock compensation expense [Abstract] |  |  |
Contractual life for outstanding stock compensation series | 1 year 1 month 2 days |  |
Vesting Price One [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares | $ 8.25 | $ 8.25 | $ 8.22
Number of shares vested (in shares) | shares | 212,042 | 24,163 | 122,057
Vesting Price Two [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares | $ 5.52 | $ 8.22 | $ 5.52
Number of shares vested (in shares) | shares | 129,205 | 123,444 | 388,412
Vesting Price Three [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares | $ 5.3 | $ 5.52 | $ 5.3
Number of shares vested (in shares) | shares | 123,698 | 107,733 | 175,048
Vesting Price Four [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares |  | $ 5.38 | $ 4.25
Number of shares vested (in shares) | shares |  | 198,745 | 167,431
Vesting Price Five [Member] |  |  |
Stock compensation expense [Abstract] |  |  |
Fair value of shares vested (in dollars per share) | $ / shares |  | $ 5.3 |
Number of shares vested (in shares) | shares |  | 102,045 |

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