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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2019
Significant Accounting Policies [Line Items]
Allowance for credit loss	$ 0	$ 0
Land use rights lease term				30 years
Deferred income	27,333,000	31,433,000
Revenue	457,182,000	397,614,000	$ 266,719,000
Cost of product revenue	190,520,000	147,118,000	95,816,000
Aggregate amount of cash and cash equivalents	679,573,000	449,667,000
RMB
Significant Accounting Policies [Line Items]
Aggregate amount of cash and cash equivalents	25,358,000	18,979,000
Customer Concentration Risk \| Revenue \| Five Largest Customers
Significant Accounting Policies [Line Items]
Revenue	$ 151,500,000	$ 128,700,000	$ 104,700,000
Concentration risk percentage	33.10%	32.40%	35.00%
Customer Concentration Risk \| Revenue \| One Customer
Significant Accounting Policies [Line Items]
Revenue	$ 77,900,000	$ 67,300,000	$ 59,400,000
Concentration risk percentage	17.00%	16.90%	19.90%
Supplier Concentration Risk \| Total Purchases \| Supplier One
Significant Accounting Policies [Line Items]
Concentration risk percentage	10.50%
Cost of product revenue	$ 48,800,000
Debtor Concentration Risk \| Accounts Receivable \| One Customer
Significant Accounting Policies [Line Items]
Accounts receivable	$ 15,500,000	$ 16,700,000
Foreign Currency Risk \| Cash and Cash Equivalents \| RMB
Significant Accounting Policies [Line Items]
Concentration risk percentage	4.00%	4.00%
Aggregate amount of cash and cash equivalents	$ 25,400,000	$ 19,000,000.0
Collaborative Agreement
Significant Accounting Policies [Line Items]
Deferred income	27,300,000	30,700,000
Government Grants
Significant Accounting Policies [Line Items]
Deferred income	$ 0	$ 700,000
Software
Significant Accounting Policies [Line Items]
Intangible assets useful life	2 years 3 months 18 days
Software \| Minimum
Significant Accounting Policies [Line Items]
Intangible assets useful life	3 years
Software \| Maximum
Significant Accounting Policies [Line Items]
Intangible assets useful life	5 years