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v3.25.2

Stock-Based Compensation Expense (Tables) | 6 Months Ended
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Jun. 30, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs | Stock-based compensation expense before income tax expense for the three and six-month periods ended June 30, 2025 and 2024 consisted of the following (in thousands) ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended
​ | ​ | June 30, | ​ | June 30,
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024
Cost of sales | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Nonqualified stock options | ​ | $ | 305 | ​ | $ | 363 | ​ | $ | 651 | ​ | $ | 725
Restricted stock units | ​ | ​ | 340 | ​ | ​ | — | ​ | ​ | 622 | ​ | ​ | —
Total cost of sales | ​ | ​ | 645 | ​ | ​ | 363 | ​ | ​ | 1,273 | ​ | ​ | 725
Research and development | ​ |  | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ | ​ | ​
Nonqualified stock options | ​ | ​ | 311 | ​ |  | 345 | ​ | ​ | 637 | ​ |  | 781
Restricted stock units | ​ | ​ | 374 | ​ | ​ | — | ​ | ​ | 717 | ​ | ​ | —
Total research and development | ​ | ​ | 685 | ​ | ​ | 345 | ​ | ​ | 1,354 | ​ | ​ | 781
Selling, general and administrative | ​ |  | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ | ​ | ​
Nonqualified stock options | ​ | ​ | 1,296 | ​ |  | 1,565 | ​ | ​ | 2,579 | ​ |  | 3,247
Performance-based restricted stock units | ​ | ​ | 4,977 | ​ | ​ | 2,897 | ​ | ​ | 8,558 | ​ | ​ | 4,764
Restricted stock units | ​ | ​ | 2,265 | ​ | ​ | 1,131 | ​ | ​ | 3,989 | ​ | ​ | 1,718
Cash-settled performance-based awards | ​ | ​ | 903 | ​ | ​ | 710 | ​ | ​ | 2,096 | ​ | ​ | 1,010
Cash-settled restricted stock units | ​ | ​ | 102 | ​ | ​ | — | ​ | ​ | 102 | ​ | ​ | —
Total selling, general and administrative | ​ | ​ | 9,543 | ​ | ​ | 6,303 | ​ | ​ | 17,324 | ​ | ​ | 10,739
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Stock-based compensation expense before taxes | ​ | $ | 10,873 | ​ | $ | 7,011 | ​ | $ | 19,951 | ​ | $ | 12,245
Performance-based restricted stock units |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | ​
​ | ​ | ​ | ​ | ​
​ | ​ | Six Months Ended
​ | ​ | June 30,
​ | ​ | 2025 | ​ | 2024
Risk-free interest rate |  | 4.0% |  | 4.4%
Performance period |  | 2.8 years |  | 2.8 years
Expected dividend yield |  | — |  | —
Expected price volatility |  | 28.0% |  | 31.1%

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Line items represent financial concepts included in a table. 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