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Stock-Based Compensation Expense (Tables)
6 Months Ended
Jun. 30, 2024
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, 2024 and 2023 consisted of the following (in thousands):

Three Months Ended

Six Months Ended

June 30, 

June 30, 

    

2024

    

2023

    

2024

    

2023

Cost of sales

Nonqualified stock options

$

363

$

432

$

725

$

873

Research and development

 

 

Nonqualified stock options

345

 

413

781

 

841

Selling, general and administrative

 

 

Nonqualified stock options

1,565

 

1,851

3,247

 

3,221

Performance-based restricted stock units

2,897

1,817

4,764

2,632

Restricted stock units

1,131

467

1,718

911

Cash-settled performance-based awards

710

600

1,010

1,071

Total selling, general and administrative

6,303

4,735

10,739

7,835

Stock-based compensation expense before taxes

$

7,011

$

5,580

$

12,245

$

9,549

Employee Stock Option  
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, 

2023

Risk-free interest rate

3.6% - 4.5%

Expected option term

4.0 years

Expected dividend yield

Expected price volatility

46.7% - 47.1%

Stock-Settled 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, 

2024

2023

Risk-free interest rate

    

4.4%

  

3.9% - 4.6%

Performance period

 

2.8 years

 

2.8 years

Expected dividend yield

 

 

Expected price volatility

 

31.1%

  

31.4% - 32.6%