VARIABLE INTEREST ENTITIES - Trust-Preferred Securities (Details)	9 Months Ended
Sep. 30, 2021
Trust Preferred Securities [Member] \| Maximum [Member]
Variable Interest Entity [Line Items]
Deferral period for payment of interest	5 years

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.

No definition available.

Name:	us-gaap_VariableInterestEntityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration