PROPERTY AND EQUIPMENT, NET - Additional Information (Detail) ¥ in Thousands	12 Months Ended
Sep. 30, 2021 CNY (¥)
Property, Plant and Equipment [Line Items]
Proceeds from sale of buildings	¥ 100,300

The cash inflow from sale of buildings.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromSaleOfBuildings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration