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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% |

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- Definition Percentage of principal amount subordinated debentures may be redeemed at. + References No definition available. + Details
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- Definition The cash inflow from issuance of subordinated debentures by a bank holding entity. + References No definition available. + Details
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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 + Details
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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 + Details
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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 + Details
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- Definition 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 + Details
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