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Principal Accounting Policies - Summary of Roll Forward of Major Level 3 Financial Assets and Financial Liability (Detail) ¥ in Thousands | 9 Months Ended
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Sep. 30, 2020 CNY (¥)
Short-term Investments [Member] |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Fair value of Level 3 financial asset and liability | ¥ 32,000
Purchase of short-term investments | 270,853
Disposal of short-term investments | (276,884)
Grant of put right liabilities | 0
Fair value change | 2,557
Effect of exchange rate changes | 0
Fair value of Level 3 financial asset and liability | 28,526
Put right liabilities [Member] |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Fair value of Level 3 financial asset and liability | 0
Purchase of short-term investments | 0
Disposal of short-term investments | 0
Grant of put right liabilities | 124,321
Fair value change | 0
Effect of exchange rate changes | (221)
Fair value of Level 3 financial asset and liability | ¥ 124,100

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