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Leases - Additional Information (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 CNY (¥)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2023 USD ($)
Leases [Abstract]
Operating lease right-of-use assets	¥ 151,871	¥ 44,349		$ 21,391
Current portion of operating lease liabilities	34,993	34,975
Long-term operating lease liabilities	¥ 119,413	¥ 10,139		$ 16,819
Weighted average remaining lease term	5 years 5 months 23 days			5 years 5 months 23 days
Weighted average discount rate	2.85%	4.25%		2.85%
Lease expenses	¥ 37,878	¥ 34,596	¥ 21,792
Short-term leases not capitalized	2,136	2,136	¥ 2,136
Cash payments for operating lease liabilities	35,982	28,136
Right-of-use assets obtained in exchange for operating lease liabilities	¥ 133,661	¥ 37,414

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Amount of operating lease expense. Excludes sublease income.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Amount of lessee's right to use underlying asset under operating lease.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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