Stock-Based Compensation Expense (Tables)

3 Months Ended

Mar. 31, 2022

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

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

	Three Months Ended
	March 31,
	2022		2021
Cost of sales
Nonqualified stock options	$	588	$	318
Research and development
Nonqualified stock options		486		279
Selling, general and administrative
Nonqualified stock options		1,924		1,627
Performance-based restricted stock units		815		731
Restricted stock units		399		355
Cash-settled performance-based share-based awards ("Liability Awards")		430		285
Total selling, general and administrative		3,568		2,998
Stock-based compensation expense before taxes	$	4,642	$	3,595

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,
	2022	2021
Risk-free interest rate	1.4% - 1.8%	0.6%
Expected option term	4 years	4 years
Expected dividend yield	—	—
Expected price volatility	46.2% - 46.6%	46.7%

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,
	2022	2021
Risk-free interest rate	1.6%	0.1% - 0.3%
Performance period	2.8 years	1.8 - 2.8 years
Expected dividend yield	—	—
Expected price volatility	42.6%	43.7% - 49.3%