Stock-Based Compensation Expense (Tables)

3 Months Ended

Mar. 31, 2023

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-month periods ended March 31, 2023 and 2022 consisted of the following (in thousands):

	Three Months Ended
	March 31,
	2023		2022
Cost of sales
Nonqualified stock options	$	441	$	588
Research and development
Nonqualified stock options		428		486
Selling, general and administrative
Nonqualified stock options		1,370		1,924
Performance-based restricted stock units		815		815
Restricted stock units		444		399
Cash-settled performance-based share-based awards ("Liability Awards")		471		430
Total selling, general and administrative		3,100		3,568
Stock-based compensation expense before taxes	$	3,969	$	4,642

Stock Options

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

	Three Months Ended
	March 31,
	2023	2022
Risk-free interest rate	3.7% - 4.5%	1.4% - 1.8%
Expected option term	4.0 years	4.0 years
Expected dividend yield	—	—
Expected price volatility	47.1%	46.2% - 46.6%

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

	Three Months Ended
	March 31,
	2023	2022
Risk-free interest rate	4.6%	1.6%
Performance period	2.8 years	2.8 years
Expected dividend yield	—	—
Expected price volatility	32.6%	42.6%