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FAIR VALUE ACCOUNTING - Assets Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets Measured on a Recurring Basis
Total available for sale securities	$ 185,160	$ 144,233
U.S. government agency obligations
Assets Measured on a Recurring Basis
Total available for sale securities	31,712	33,365
Obligations of states and political subdivisions
Assets Measured on a Recurring Basis
Total available for sale securities	140	140
Mortgage-backed securities
Assets Measured on a Recurring Basis
Total available for sale securities	72,056	40,991
Corporate debt securities
Assets Measured on a Recurring Basis
Total available for sale securities	27,913	17,462
Trust preferred securities
Assets Measured on a Recurring Basis
Total available for sale securities	17,630	16,448
Fair Value, Measurements, Recurring
Assets Measured on a Recurring Basis
Total available for sale securities	185,160	144,233
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Total available for sale securities	185,160	144,233
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | U.S. government agency obligations
Assets Measured on a Recurring Basis
Total available for sale securities	31,712	33,365
Fair Value, Measurements, Recurring | U.S. government agency obligations | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | U.S. government agency obligations | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Total available for sale securities	31,712	33,365
Fair Value, Measurements, Recurring | U.S. government agency obligations | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | Obligations of states and political subdivisions
Assets Measured on a Recurring Basis
Total available for sale securities	140	140
Fair Value, Measurements, Recurring | Obligations of states and political subdivisions | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | Obligations of states and political subdivisions | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Total available for sale securities	140	140
Fair Value, Measurements, Recurring | Obligations of states and political subdivisions | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | Mortgage-backed securities
Assets Measured on a Recurring Basis
Total available for sale securities	72,056	40,991
Fair Value, Measurements, Recurring | Mortgage-backed securities | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | Mortgage-backed securities | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Total available for sale securities	72,056	40,991
Fair Value, Measurements, Recurring | Mortgage-backed securities | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | Corporate debt securities
Assets Measured on a Recurring Basis
Total available for sale securities	27,913	17,462
Fair Value, Measurements, Recurring | Corporate debt securities | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | Corporate debt securities | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Total available for sale securities	27,913	17,462
Fair Value, Measurements, Recurring | Corporate debt securities | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | Corporate asset-backed securities
Assets Measured on a Recurring Basis
Total available for sale securities	35,709	35,827
Fair Value, Measurements, Recurring | Corporate asset-backed securities | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | Corporate asset-backed securities | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Total available for sale securities	35,709	35,827
Fair Value, Measurements, Recurring | Corporate asset-backed securities | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | Trust preferred securities
Assets Measured on a Recurring Basis
Total available for sale securities	17,630	16,448
Fair Value, Measurements, Recurring | Trust preferred securities | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Total available for sale securities	0	0
Fair Value, Measurements, Recurring | Trust preferred securities | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Total available for sale securities	17,630	16,448
Fair Value, Measurements, Recurring | Trust preferred securities | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Total available for sale securities	$ 0	$ 0

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
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-URI http://asc.fasb.org/extlink&oid=121558606&loc=SL82898722-210454

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121553693&loc=d3e26610-111562

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-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563

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