Income Taxes - Schedule of Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Research and development tax credit carryforwards	$ 27,721,000	$ 29,619,000
Stock-based compensation	8,613,000	5,709,000
Inventory reserves	2,628,000	3,363,000
Investment tax credit carryforwards	1,290,000	2,659,000
UNICAP	2,833,000	1,139,000
Vacation accrual	1,344,000	1,319,000
Lease liabilities	1,331,000	1,388,000
Capitalized research and development	27,043,000	22,621,000
Other	8,738,000	3,235,000
Total deferred tax assets	81,541,000	71,052,000
Less: Valuation allowance for deferred tax assets	(61,531,000)	(52,291,000)
Net deferred tax assets	20,010,000	18,761,000
Deferred tax liabilities:
Depreciation	(17,345,000)	(16,139,000)
ROU assets	(1,096,000)	(1,201,000)
Prepaid expenses	(1,239,000)	(1,048,000)
Other	(69,000)	(77,000)
Total deferred tax liabilities	(19,749,000)	(18,465,000)
Net deferred tax assets (liabilities)	$ 261,000	$ 296,000