SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, FHLB and FRB Stock (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Federal Home Loan Bank ("FHLB") and Federal Reserve Bank ("FRB") Stock [Abstract]
Impairment charge on equity securities with no actively traded market	$ 0	$ 0

Amount of impairment loss on investment in equity security without readily determinable fair value.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 321
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479536/321-10-50-3

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