Income Taxes - Deferred Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
State net operating loss carryforwards	$ 52	$ 96
Foreign net operating loss carryforwards	122	182
Federal tax credit carryforwards	3,378	1,999
State tax credit carryforwards	11,357	9,560
Property, plant and equipment	4,896	6,979
Operating lease liability	5,504	5,564
Accrued compensation	313	242
Inventories	552	804
Stock compensation	2,399	1,790
Warranty	2,666	3,108
Deferred revenue	6,562	6,389
Capitalized research and development costs	54,673	38,036
Gross deferred tax assets	92,474	74,749
Valuation allowance	(14,736)	(10,963)
Net deferred tax assets	77,738	63,786
Deferred tax liabilities:
Right-of-use asset	(8,750)	(9,155)
Other	(711)	(1,203)
Gross deferred tax liabilities	(9,461)	(10,358)
Deferred taxes, net	$ 68,277	$ 53,428