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JUNIOR SUBORDINATED DEFERRABLE INTEREST DEBENTURES - General Information (Details) - Floating Rate Junior Subordinated Deferrable Interest Debentures [Member] - Junior Subordinated Debt [Member] - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 9,485,000	$ 9,485,000
BFC Trust [Member]
Debt Instrument [Line Items]
Preferred Stock, Amount Authorized	93,000
Preferred Stock, Liquidation Preference, Value	1,000
Proceeds from Issuance of Preferred Stock and Preference Stock	3,100,000
Debt Instrument, Face Amount	$ 3,093,000	3,093,000
BFC Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.75%
FULB Trust [Member]
Debt Instrument [Line Items]
Preferred Stock, Amount Authorized	$ 192,000
Floating Rate Capital Trust Pass-through Securities Issued	6,200
Preferred Stock, Liquidation Preference, Value	$ 1,000
Proceeds from Issuance of Preferred Stock and Preference Stock	6,200,000
Debt Instrument, Face Amount	$ 6,392,000	$ 6,392,000
FULB Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.50%

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Floating Rate Capital Trust Pass-through Securities Issued

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Face (par) amount of debt instrument at time of issuance.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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Value of the difference between preference in liquidation and the par or stated values of the preferred shares.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
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