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Fair Value Measurements - Summary of Assets And Liabilities Measured Or Disclosed At Fair Value (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 CNY (¥) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2021 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Derivative Asset, Current |  | ¥ 5,989 | ¥ 100 | $ 940
Property and equipment, net |  | 62,179 | 73,522 | 9,757
Fair value adjustment |  | (19,351) | (49,691) |
Total assets and liabilities measured at fair value |  | 6,574 | 4,605 | 1,032
Fair Value, Nonrecurring [Member] |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Property and equipment, net |  |  | 4,505 |
Property and equipment, net, Fair value adjustment |  |  | (10,952) |
Fair value adjustment |  |  | (38,739) |
Fair Value, Recurring [Member] |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Equity investments accounted for at fair value using the alternative measurement | [1] | 585 |  | 92
Derivative Asset, Current |  | 5,989 | 100 | $ 940
Fair value adjustment | [1] | (25,340) |  |
Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Total assets and liabilities measured at fair value |  | 5,989 | 4,605 |
Fair Value, Inputs, Level 2 [Member] | Fair Value, Nonrecurring [Member] |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Property and equipment, net |  |  | 4,505 |
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Derivative Asset, Current |  | 5,989 | ¥ 100 |
Fair Value, Inputs, Level 3 [Member] | Fair Value, Nonrecurring [Member] |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |
Equity investments accounted for at fair value using the alternative measurement | [1] | 585 |  |
Total assets and liabilities measured at fair value |  | ¥ 585 |  |
[1] | For equity securities accounted for under the measurement alternative, when there are observable price changes in orderly transactions for identical or similar investments of the same issuer, the investments are re-measured to fair value. The Company recognized impairment charges of long-term investments during the year ended December 31, 2021.

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- Definition Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=SL6742756-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 35 -Paragraph 54B -URI http://asc.fasb.org/extlink&oid=122636397&loc=SL7495116-110257 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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