OTHER OPERATING INCOME - Schedule Of Other Operating Income Net (Parenthetical) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2019 CNY (¥)
Other Income And Expenses [Line Items]
Percent of VAT in super deduction	10.00%	10.00%
Other operating income, net	¥ 54,416	$ 8,539	¥ 33,218	¥ 68,646
Government grant [Member]
Other Income And Expenses [Line Items]
Other operating income, net				¥ 43,599

The total amount of other operating income, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration