Summary of Significant Accounting Policies - Additional Information (Details) $ / shares in Units, ¥ in Millions			1 Months Ended	12 Months Ended						45 Months Ended
	Mar. 30, 2022 USD ($) $ / shares shares	Mar. 29, 2022	Apr. 30, 2020 CNY (¥)	Dec. 31, 2023 USD ($) segment $ / shares shares	Dec. 31, 2023 CNY (¥) segment	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2022 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2019	Dec. 31, 2023 CNY (¥)
Significant Accounting Policies [Line Items]
Share Subdivision ratio	10
Ordinary shares, authorized share capital	$ 30,000
Ordinary shares, shares authorized (in shares) | shares	5,000,000,000			5,000,000,000		5,000,000,000
Ordinary shares, par value (in dollars per share) | $ / shares	$ 0.000006			$ 0.000006		$ 0.000006
ADS to ordinary shares conversion ratio	10	1
Allowance for credit loss				$ 0		$ 0
Land use rights lease term									30 years
Amortization expenses				700,000		500,000		$ 500,000
Finite-lived intangible assets, Amortization expense, year one				3,100,000
Finite-lived intangible assets, Amortization expense, year two				2,900,000
Finite-lived intangible assets, Amortization expense, year three				2,700,000
Finite-lived intangible assets, Amortization expense, year four				2,500,000
Finite-lived intangible assets, Amortization expense, year five				2,300,000
Finite-lived intangible assets, Amortization expense, after year five				0
Deferred income				28,738,000		21,360,000
Unrecognized tax benefits and related interest and penalties				$ 0		0		0
Number of operating segments | segment				1	1
Number of reportable segments | segment				1	1
Revenue				$ 266,719,000		212,672,000		144,105,000
Aggregate amount of cash and cash equivalents				790,151,000		1,008,470,000		964,100,000
RMB
Significant Accounting Policies [Line Items]
Aggregate amount of cash and cash equivalents				25,093,000		45,486,000
Customer Concentration Risk | One Customer | Revenue
Significant Accounting Policies [Line Items]
Revenue				59,400,000		52,500,000		$ 40,600,000
Debtor Concentration Risk | One Customer | Accounts Receivable
Significant Accounting Policies [Line Items]
Accounts receivable				7,800,000		9,300,000
Foreign Currency Risk | Cash and Cash Equivalents | RMB
Significant Accounting Policies [Line Items]
Aggregate amount of cash and cash equivalents				$ 25,100,000		$ 45,500,000
Concentration risk percentage				3.00%	3.00%	5.00%	5.00%
Level 1
Significant Accounting Policies [Line Items]
Equity investments with readily determinable fair value				$ 9,200,000		$ 6,400,000
Government Grants
Significant Accounting Policies [Line Items]
Deferred income				2,100,000		900,000
Huizheng
Significant Accounting Policies [Line Items]
Upfront payment | ¥			¥ 90.0		¥ 70.0		¥ 70.0			¥ 230.0
Huizheng | Collaborative Agreement
Significant Accounting Policies [Line Items]
Deferred income				26,700,000		20,500,000
Software
Significant Accounting Policies [Line Items]
Intangible assets, net				$ 2,200,000		$ 1,500,000
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
Capitalized Sales Based Milestone Fees
Significant Accounting Policies [Line Items]
Intangible assets, net				$ 11,200,000