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SUBORDINATED DEBENTURES - Additional Information (Details) - USD ($)		9 Months Ended	12 Months Ended
	Dec. 31, 2019	Oct. 01, 2003	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Subordinated Debentures Disclosure [Abstract]
Proceeds from Issuance of Trust Preferred Securities		$ 30,000,000.0
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed				100.00%
Debt Instrument, Redemption Price, Percentage				100.00%
Payments for Repurchase of Trust Preferred Securities				$ 30,000,000.0
Payments for redemption of common securities	$ 928,000		$ 10,547,000	$ 515,000	$ 463,000
Proceeds From Issuance Of Subordinated Debentures		$ 30,900,000
Integral multiple subordinated debentures may be redeemed in			$ 1,000
Percentage of principal amount subordinated debentures may be redeemed at	100.00%		100.00%	100.00%

X

- Definition

Integral multiple the subordinated debentures may be redeemed in a principal amount.

+ References

No definition available.

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- Definition

Percentage of principal amount subordinated debentures may be redeemed at.

+ References

No definition available.

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X

- Definition

The cash inflow from issuance of subordinated debentures by a bank holding entity.

+ References

No definition available.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

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- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

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- Definition

The cash outflow to reacquire common stock during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

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- Definition

The cash outflow to reacquire preferred stocks issued by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

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The cash inflow from issuance of preferred stocks by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

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