Number of vote ordinary shares entitled.

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- Definition

Transferred to designated agent account for share repurchase.

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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.

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No definition available.

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- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

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No definition available.

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- Definition

Face amount or stated value per share of common stock.

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-Topic 210
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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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- Definition

Description of voting rights of common stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights.

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- Definition

The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Amount of stock repurchase plan authorized.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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Ordinary Shares - Additional Information (Details) ¥ / shares in Units, $ / shares in Units, ¥ in Thousands		12 Months Ended
	Sep. 18, 2015 Vote $ / shares shares	Dec. 31, 2021 CNY (¥) shares	Dec. 31, 2020 CNY (¥) shares	Dec. 31, 2019 CNY (¥) shares	Dec. 31, 2021 $ / shares	Dec. 06, 2021 USD ($)	Dec. 31, 2020 $ / shares	Aug. 29, 2018 USD ($)	Sep. 18, 2015 ¥ / shares shares
Ordinary Shares [Line Items]
Ordinary shares, shares authorized	1,000,000,000								1,000,000,000
Ordinary shares, par value \| (per share)	$ 0.00005								¥ 0.0003
Ordinary shares, shares issued	1								1
Transferred to designated agent account for share repurchase \| ¥		¥ 4,866
Class A Ordinary Shares
Ordinary Shares [Line Items]
Ordinary shares, shares authorized		796,062,195	796,062,195
Ordinary shares, par value \| $ / shares					$ 0.00005		$ 0.00005
Ordinary shares, shares issued		2,085,939	1,978,621
Common stock, voting right				Class A ordinary share is entitled to one vote
Number of vote each ordinary shares entitled \| Vote	1
Authorized amount under share repurchase program \| $						$ 15,000		$ 50,000
Number of shares repurchased		60,325	163,884	51,895
Stock Repurchased During Period, Value \| ¥		¥ 3,623	¥ 26,579	¥ 30,793
Conversion of shares		107,318	148,438	6,600
Class B Ordinary Shares
Ordinary Shares [Line Items]
Ordinary shares, shares authorized		826,389	826,389
Ordinary shares, par value \| $ / shares					0.00005		0.00005
Ordinary shares, shares issued		826,389	826,389
Common stock, voting right				Class B ordinary share is entitled to seven votes
Number of vote each ordinary shares entitled \| Vote	7
Class of each ordinary shares convertible into class A ordinary shares	1								1
Class C Ordinary Shares
Ordinary Shares [Line Items]
Ordinary shares, shares authorized		203,111,416	203,111,416
Ordinary shares, par value \| $ / shares					$ 0.00005		$ 0.00005
Ordinary shares, shares issued		4,002,930	4,110,248
Common stock, voting right				Class C ordinary share is entitled to ten votes
Number of vote each ordinary shares entitled \| Vote	10
Class of each ordinary shares convertible into class A ordinary shares	1								1
Conversion of shares		(107,318)	(148,438)	(6,600)
American Depository Shares
Ordinary Shares [Line Items]
Number of shares repurchased		120,650	4,097,195	1,297,363