Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Revenue:
Total revenue	$ 16,578	$ 14,170
Cost of revenue:
Total cost of revenue	8,113	7,115
Gross profit	8,465	7,055
Operating expenses:
Research and development	43,874	50,585
Selling, general and administrative	42,583	56,571
Total operating expenses	86,457	107,156
Loss from operations	(77,992)	(100,101)
Other income (expense):
Interest income	11,522	16,666
Loss on equity method investment	(5,919)	(2,649)
Other expense	(1,010)	(417)
Total other income	4,593	13,600
Loss before provision for income taxes	(73,399)	(86,501)
Provision for income taxes	201	98
Net loss	(73,600)	(86,599)
Other comprehensive loss:
Unrealized gain on available-for-sale securities	323	328
Comprehensive loss	(73,277)	(86,271)
Nonrelated Party | Product
Revenue:
Total revenue	11,207	8,695
Cost of revenue:
Total cost of revenue	5,336	4,402
Nonrelated Party | Service
Revenue:
Total revenue	4,151	2,960
Cost of revenue:
Total cost of revenue	1,531	1,465
Nonrelated Party | Other
Revenue:
Total revenue	459	223
Cost of revenue:
Total cost of revenue	1,022	536
Related Party | Product
Revenue:
Total revenue	761	2,292
Cost of revenue:
Total cost of revenue	224	712
Class A and Class B Common Stockholder
Other income (expense):
Net loss	$ (73,600)	$ (86,599)
Other comprehensive loss:
Net loss per share attributable to common shareholders, basic (in usd per share)	$ (1.28)	$ (1.39)
Net loss per share attributable to common shareholders, diluted (in usd per share)	$ (1.28)	$ (1.39)
Weighted-average common shares outstanding, basic	57,447,580	62,348,012
Weighted-average common shares outstanding, diluted	57,447,580	62,348,012