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Prepayments and Other Current Assets - Summary of Prepayments and Other Current Assets (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)
Prepaid Expense and Other Assets, Current [Abstract]
Prepayment for service	¥ 11,157	$ 1,618	¥ 1,672
Unbilled revenue (Note 15)	10,800	1,566
Deductible value-added tax input	8,976	1,301	16,487
Prepayment for acquisition of inventories	6,910	1,002	8,286
Loans receivable – current portion (Note 9)	4,000	580
Staff advances	940	136	1,257
Others	2,400	347	1,693
Total Prepayments	¥ 45,183	$ 6,550	¥ 29,395

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Prepaid acquisition of inventories.

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Prepaid service fees.

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Amounts due from an Entity employee, not to include stockholders or officers, which are usually due within 1 year (or 1 business cycle).

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets.

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Amount of asset related to consideration paid in advance for income and other taxes that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.

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