FAIR VALUE - Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial Assets:
Securities available for sale	$ 626,195	$ 554,611
Obligations of U.S. Government and U.S. Government sponsored enterprises
Financial Assets:
Securities available for sale	611
Mortgage-backed securities, residential
Financial Assets:
Securities available for sale	520,497	467,866
Obligations of states and political subdivisions
Financial Assets:
Securities available for sale	42,822	43,405
Corporate bonds and notes
Financial Assets:
Securities available for sale	9,076	9,035
SBA loan pools
Financial Assets:
Securities available for sale	53,189	34,305
Recurring
Financial Assets:
Securities available for sale	626,195	554,611
Equity investments, at fair value	2,056	1,880
Derivative Asset	10,597	14,345
Financial Liabilities:
Derivative Liabilities	10,931	14,702
Recurring \| Obligations of U.S. Government and U.S. Government sponsored enterprises
Financial Assets:
Securities available for sale	611
Recurring \| Mortgage-backed securities, residential
Financial Assets:
Securities available for sale	520,497	467,866
Recurring \| Obligations of states and political subdivisions
Financial Assets:
Securities available for sale	42,822	43,405
Recurring \| Corporate bonds and notes
Financial Assets:
Securities available for sale	9,076	9,035
Recurring \| SBA loan pools
Financial Assets:
Securities available for sale	53,189	34,305
Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net	115	237
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring
Financial Assets:
Securities available for sale	611	0
Equity investments, at fair value	2,056	1,880
Derivative Asset	0	0
Financial Liabilities:
Derivative Liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring \| Obligations of U.S. Government and U.S. Government sponsored enterprises
Financial Assets:
Securities available for sale	611
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring \| Mortgage-backed securities, residential
Financial Assets:
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring \| Obligations of states and political subdivisions
Financial Assets:
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring \| Corporate bonds and notes
Financial Assets:
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Recurring \| SBA loan pools
Financial Assets:
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net	0	0
Significant Other Observable Inputs (Level 2) \| Recurring
Financial Assets:
Securities available for sale	625,584	554,611
Equity investments, at fair value	0	0
Derivative Asset	10,597	14,345
Financial Liabilities:
Derivative Liabilities	10,931	14,702
Significant Other Observable Inputs (Level 2) \| Recurring \| Obligations of U.S. Government and U.S. Government sponsored enterprises
Financial Assets:
Securities available for sale	0
Significant Other Observable Inputs (Level 2) \| Recurring \| Mortgage-backed securities, residential
Financial Assets:
Securities available for sale	520,497	467,866
Significant Other Observable Inputs (Level 2) \| Recurring \| Obligations of states and political subdivisions
Financial Assets:
Securities available for sale	42,822	43,405
Significant Other Observable Inputs (Level 2) \| Recurring \| Corporate bonds and notes
Financial Assets:
Securities available for sale	9,076	9,035
Significant Other Observable Inputs (Level 2) \| Recurring \| SBA loan pools
Financial Assets:
Securities available for sale	53,189	34,305
Significant Other Observable Inputs (Level 2) \| Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net	0	0
Significant Unobservable Inputs (Level 3) \| Recurring
Financial Assets:
Securities available for sale	0	0
Equity investments, at fair value	0	0
Derivative Asset	0	0
Financial Liabilities:
Derivative Liabilities	0	0
Significant Unobservable Inputs (Level 3) \| Recurring \| Obligations of U.S. Government and U.S. Government sponsored enterprises
Financial Assets:
Securities available for sale	0
Significant Unobservable Inputs (Level 3) \| Recurring \| Mortgage-backed securities, residential
Financial Assets:
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) \| Recurring \| Obligations of states and political subdivisions
Financial Assets:
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) \| Recurring \| Corporate bonds and notes
Financial Assets:
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) \| Recurring \| SBA loan pools
Financial Assets:
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) \| Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net	115	237
Commercial mortgages, other \| Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net		111
Commercial mortgages, other \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net		0
Commercial mortgages, other \| Significant Other Observable Inputs (Level 2) \| Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net		0
Commercial mortgages, other \| Significant Unobservable Inputs (Level 3) \| Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net		111
Residential mortgages \| Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net	115	126
Residential mortgages \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net	0	0
Residential mortgages \| Significant Other Observable Inputs (Level 2) \| Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net	0	0
Residential mortgages \| Significant Unobservable Inputs (Level 3) \| Non-recurring \| Other real estate owned:
Other real estate owned:
Total other real estate owned, net	$ 115	$ 126

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