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Long-Term Debt - Additional Information (Details) ¥ in Thousands	12 Months Ended
	Dec. 31, 2019 CNY (¥)	Dec. 31, 2018 CNY (¥)	Nov. 21, 2018 CNY (¥) Loan	Aug. 29, 2018 CNY (¥) Loan
Debt Instrument [Line Items]
Debt instrument, term	8 years
Mortgage Bank Loan | PRC Bank
Debt Instrument [Line Items]
Debt instrument number of loan agreement | Loan			2	2
Debt instrument, face amount			¥ 260,000	¥ 260,000
Debt instrument periodic payment description	The loans are secured by pledging Building A and Building D and are repaid in equal instalment every three months with maturity term in 8 years.
Debt instrument, interest rate	1.472%
Repayment of secured loans	¥ 32,500	¥ 1,875

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- Definition

Debt instrument number of loan agreement.

+ References

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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