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SECURITIES - Available-for-sale Debt Securities by Contractual Maturity (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Available-for-sale Securities
Due in one year or less, amortized cost	$ 13,409,000
Due in one year or less, fair value	13,506,000
Due from one year through five years. amortized cost	46,172,000
Due from one year through five years, fair value	47,758,000
Due from five years through ten years, amortized cost	47,535,000
Due from five years through ten years, fair value	50,110,000
Due after ten years, amortized cost	92,074,000
Due after ten years, fair value	97,005,000
Sub-total, amortized cost	199,190,000
Sub-total, fair value	208,379,000
Total, amortized cost	334,552,000	$ 342,278,000
Total, fair value	349,332,000	346,723,000
Investment Securities [Member]
Available-for-sale Securities
Investment pledged as collateral	247,373,000	215,270,000
Residential Passthrough Securities
Available-for-sale Securities
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	36,853,000
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	38,176,000
Total, amortized cost	36,853,000	58,875,000
Total, fair value	38,176,000	59,210,000
Residential Collateralized Mortgage Obligations
Available-for-sale Securities
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	56,048,000
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	57,467,000
Total, amortized cost	56,048,000	115,025,000
Total, fair value	57,467,000	$ 114,723,000
Commercial mortgage-backed securities
Available-for-sale Securities
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	42,461,000
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	$ 45,310,000

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