SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Intangible Assets (Details)	9 Months Ended
Sep. 30, 2021 USD ($)
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Impairment of intangible assets	$ 0

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

No definition available.

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