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Long-Term Borrowings - Summary of Long-term Debt Instruments (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)
Debt Disclosure [Abstract]
Long-term borrowings	¥ 57,875	$ 9,082	¥ 144,875
Less: Current portion of long-term borrowings	(57,875)	(9,082)	(86,500)
Total	¥ 0	$ 0	¥ 58,375

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Current portion of long-term borrowings.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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