Prepayments and Other Assets - Schedule of Prepayments and Other Assets (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)
Current portion:
Prepayments to suppliers	¥ 162,528	$ 25,504	¥ 78,621
Contract costs	145,628	22,852	13,882
Contract assets, net	550,068	86,318
VAT prepayments	619,391	97,196	470,567
Interest receivable	21,463	3,368	14,204
Individual income tax receivable	48,949	7,681	231,377
Others	138,994	21,811	78,435
Total	1,687,021	264,730	887,086
Non-current portion:
Prepayments for electronic equipment	25,388	3,984	8,978
Others	3,678	577	2,846
Total	¥ 29,066	$ 4,561	¥ 11,824

Contract with customer assets.

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Individual income tax receivable.

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Prepayments for electronic equipment non current.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Carrying amount as of the balance sheet date of current interest earned but not received. Also called accrued interest or accrued interest receivable. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

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Amount of current assets classified as other.

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Amount of noncurrent assets classified as other.

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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 that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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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 that are expected to be realized or consumed after one year or the normal operating cycle, if longer.

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Amount of consideration paid in advance for supplies that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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Carrying amount as of the balance sheet date of value added taxes due either from customers arising from sales on credit terms, or as previously overpaid to tax authorities. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

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