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FAIR VALUE ACCOUNTING - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	$ 165,991	$ 203,068
U.S. government agency obligations
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	18,313	26,265
Obligations of states and political subdivisions
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	140
Mortgage-backed securities
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	78,610	107,167
Corporate debt securities
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	40,251	35,588
Recurring
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	165,991	203,068
Total equity investments	1,794	1,328
Total	167,785	204,396
Recurring | Equity investments
Assets Measured on a Recurring Basis
Total equity investments	338	368
Recurring | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	0
Total equity investments	338	368
Total	338	368
Recurring | Quoted Prices in Active Markets for Identical Instruments (Level 1) | Equity investments
Assets Measured on a Recurring Basis
Total equity investments	338	368
Recurring | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	165,991	203,068
Total equity investments	0	0
Total	165,991	203,068
Recurring | Significant Other Observable Inputs (Level 2) | Equity investments
Assets Measured on a Recurring Basis
Total equity investments	0	0
Recurring | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	0
Total equity investments	0	0
Total	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Equity investments
Assets Measured on a Recurring Basis
Total equity investments	0	0
Recurring | NAV | Equity investments
Assets Measured on a Recurring Basis
Total equity investments	1,456	960
Recurring | U.S. government agency obligations
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	18,313	26,265
Recurring | U.S. government agency obligations | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	0
Recurring | U.S. government agency obligations | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	18,313	26,265
Recurring | U.S. government agency obligations | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	0
Recurring | Obligations of states and political subdivisions
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	140
Recurring | Obligations of states and political subdivisions | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	0
Recurring | Obligations of states and political subdivisions | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	140
Recurring | Obligations of states and political subdivisions | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	0
Recurring | Mortgage-backed securities
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	78,610	107,167
Recurring | Mortgage-backed securities | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	0
Recurring | Mortgage-backed securities | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	78,610	107,167
Recurring | Mortgage-backed securities | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	0
Recurring | Corporate debt securities
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	40,251	35,588
Recurring | Corporate debt securities | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	0
Recurring | Corporate debt securities | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	40,251	35,588
Recurring | Corporate debt securities | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	0
Recurring | Corporate asset-backed securities
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	28,817	33,908
Recurring | Corporate asset-backed securities | Quoted Prices in Active Markets for Identical Instruments (Level 1)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	0	0
Recurring | Corporate asset-backed securities | Significant Other Observable Inputs (Level 2)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	28,817	33,908
Recurring | Corporate asset-backed securities | Significant Unobservable Inputs (Level 3)
Assets Measured on a Recurring Basis
Securities available for sale "AFS"	$ 0	$ 0

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