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SECURITIES - Available-for-sale Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Available-for-sale Securities
Due in one year or less, amortized cost	$ 14,411
Due in one year or less, fair value	14,469
Due from one year through five years. amortized cost	45,804
Due from one year through five years, fair value	47,460
Due from five years through ten years, amortized cost	37,479
Due from five years through ten years, fair value	40,088
Due after ten years, amortized cost	76,782
Due after ten years, fair value	80,427
Sub-total, amortized cost	174,476
Sub-total, fair value	182,444
Total, amortized cost	326,145	$ 342,278
Total, fair value	340,545	346,723
Residential Pass-Through Securities
Available-for-sale Securities
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	44,697
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	46,211
Total, amortized cost	44,697	58,875
Total, fair value	46,211	59,210
Residential Collateralized Mortgage Obligations
Available-for-sale Securities
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	67,635
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	69,337
Total, amortized cost	67,635	115,025
Total, fair value	69,337	$ 114,723
Commercial mortgage-backed securities
Available-for-sale Securities
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, amortized cost	39,337
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies, fair value	$ 42,553

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