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Share-based compensation | 6 Months Ended
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Jun. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Share-based compensation | 12. Share-based compensation Components of share-based compensation expense are as follows:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(Unaudited, U.S. Dollars, in thousands) |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Cost of sales |  | $ | 468 |  |  | $ | 514 |  |  | $ | 929 |  |  | $ | 1,090 |
Sales, general, and administrative |  |  | 6,915 |  |  |  | 8,883 |  |  |  | 12,564 |  |  |  | 16,098 |
Research and development |  |  | 441 |  |  |  | 562 |  |  |  | 800 |  |  |  | 1,571 |
Total |  | $ | 7,824 |  |  | $ | 9,959 |  |  | $ | 14,293 |  |  | $ | 18,759 |
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(Unaudited, U.S. Dollars, in thousands) |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Stock options |  | $ | 1,594 |  |  | $ | 1,382 |  |  | $ | 2,463 |  |  | $ | 2,500 |
Market-based stock options |  |  | 592 |  |  |  | 499 |  |  |  | 1,238 |  |  |  | 826 |
Time-based restricted stock awards and units |  |  | 3,528 |  |  |  | 6,254 |  |  |  | 6,522 |  |  |  | 12,127 |
Market-based / performance-based restricted stock units |  |  | 1,650 |  |  |  | 1,303 |  |  |  | 3,070 |  |  |  | 2,141 |
Stock purchase plan |  |  | 460 |  |  |  | 521 |  |  |  | 1,000 |  |  |  | 1,165 |
Total |  | $ | 7,824 |  |  | $ | 9,959 |  |  | $ | 14,293 |  |  | $ | 18,759 |
During the three months ended June 30, 2025, and 2024, the Company issued 0.4 million and 0.6 million shares, respectively, of common stock related to stock purchase plan issuances, stock option exercises, and the vesting of restricted stock awards and units. During the six months ended June 30, 2025, and 2024, the Company issued 1.0 million and 0.9 million shares, respectively, of common stock related to stock purchase plan issuances, stock option exercises, and the vesting of restricted stock awards and units.

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