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SECURITIES - Available-for-sale Debt Securities by Contractual Maturity (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Available-for-sale Securities
Due in one year or less, amortized cost	$ 14,515,000
Due in one year or less, fair value	14,605,000
Due from one year through five years. amortized cost	48,413,000
Due from one year through five years, fair value	49,640,000
Due from five years through ten years, amortized cost	55,176,000
Due from five years through ten years, fair value	57,185,000
Due after ten years, amortized cost	115,684,000
Due after ten years, fair value	119,854,000
Sub-total, amortized cost	233,788,000
Sub-total, fair value	241,284,000
Total, amortized cost	380,276,000	$ 334,552,000
Total, fair value	391,881,000	349,332,000
Investment Securities [Member]
Available-for-sale Securities
Investment pledged as collateral	250,123,000	247,373,000
Residential Passthrough Securities
Available-for-sale Securities
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	50,397,000
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	51,328,000
Total, amortized cost	50,397,000	36,853,000
Total, fair value	51,328,000	38,176,000
Residential Collateralized Mortgage Obligations
Available-for-sale Securities
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	44,536,000
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	45,575,000
Total, amortized cost	44,536,000	56,048,000
Total, fair value	45,575,000	$ 57,467,000
Commercial mortgage-backed securities
Available-for-sale Securities
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	51,555,000
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	$ 53,694,000

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