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Organization and Basis of Presentation - Summary of Financial Information of VIE and VIE's Subsidiaries (Parenthetical) (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2024 CNY (¥)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 CNY (¥)	Dec. 31, 2021 CNY (¥)
Table Text Block Supplement [Abstract]
Accounts Receivable, Allowance	¥ 45,867	$ 6,284	¥ 38,396
Contract Assets, Net Of Allowances	61,856	8,474	58,790	$ 8,054	¥ 35,770	¥ 14,478
Variable Interest Entity, Primary Beneficiary [Member]
Table Text Block Supplement [Abstract]
Accounts Receivable, Allowance	45,590	6,246	38,123
Contract Assets, Net Of Allowances	¥ 61,856	$ 8,474	¥ 58,790

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Amount of allowance for credit loss on accounts receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
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-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-Section 50
-Paragraph 4
-Publisher FASB
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Amount of allowance for credit loss for 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
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-Section 45
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-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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