FAIR VALUE (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financial Assets:
Estimated Fair Value	$ 267,529,000		$ 267,529,000		$ 242,258,000
Impaired Loans, Fair Value Disclosure [Abstract]
Level 2 to level 1 transfer amount	0	$ 0	0	$ 0
Total Gains (Losses)	(4,441,000)	(300,000)	(5,684,000)	(3,371,000)
Recurring
Financial Assets:
Obligations of U.S. Government and U.S. Government sponsored enterprises					5,472,000
Mortgage-backed securities, residential	203,524,000		203,524,000		183,192,000
Obligations of states and political subdivisions	47,270,000		47,270,000		44,152,000
Corporate bonds and notes	250,000		250,000		247,000
SBA loan pools	16,485,000		16,485,000		9,195,000
Estimated Fair Value	267,529,000		267,529,000		242,258,000
Equity investments	1,231,000		1,231,000		1,075,000
Derivative assets	7,885,000		7,885,000		3,142,000
Financial Liabilities:
Derivative liabilities	8,311,000		8,311,000		3,282,000
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets:
Obligations of U.S. Government and U.S. Government sponsored enterprises					0
Mortgage-backed securities, residential	0		0		0
Obligations of states and political subdivisions	0		0		0
Corporate bonds and notes	0		0		0
SBA loan pools	0		0		0
Estimated Fair Value	0		0		0
Equity investments	1,231,000		1,231,000		1,075,000
Derivative assets	0		0		0
Financial Liabilities:
Derivative liabilities	0		0		0
Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets:
Obligations of U.S. Government and U.S. Government sponsored enterprises					5,472,000
Mortgage-backed securities, residential	203,524,000		203,524,000		183,192,000
Obligations of states and political subdivisions	47,270,000		47,270,000		44,152,000
Corporate bonds and notes	250,000		250,000		247,000
SBA loan pools	16,485,000		16,485,000		9,195,000
Estimated Fair Value	267,529,000		267,529,000		242,258,000
Equity investments	0		0		0
Derivative assets	7,885,000		7,885,000		3,142,000
Financial Liabilities:
Derivative liabilities	7,885,000		7,885,000		3,142,000
Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets:
Obligations of U.S. Government and U.S. Government sponsored enterprises					0
Mortgage-backed securities, residential	0		0		0
Obligations of states and political subdivisions	0		0		0
Corporate bonds and notes	0		0		0
SBA loan pools	0		0		0
Estimated Fair Value	0		0		0
Equity investments	0		0		0
Derivative assets	0		0		0
Financial Liabilities:
Derivative liabilities	426,000		426,000		140,000
Impaired Loans: | Non-recurring
Impaired Loans, Fair Value Disclosure [Abstract]
Total impaired loans	7,627,000		7,627,000		1,456,000
Total Gains (Losses)			(1,673,000)		240,000
Impaired Loans: | Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Impaired Loans, Fair Value Disclosure [Abstract]
Total impaired loans	0		0		0
Impaired Loans: | Non-recurring | Significant Other Observable Inputs (Level 2)
Impaired Loans, Fair Value Disclosure [Abstract]
Total impaired loans	0		0		0
Impaired Loans: | Non-recurring | Significant Unobservable Inputs (Level 3)
Impaired Loans, Fair Value Disclosure [Abstract]
Total impaired loans	7,627,000		7,627,000		1,456,000
Other real estate owned: | Non-recurring
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	210,000		210,000		574,000
Total Gains (Losses)			0		(14,000)
Other real estate owned: | Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	0		0		0
Other real estate owned: | Non-recurring | Significant Other Observable Inputs (Level 2)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	0		0		0
Other real estate owned: | Non-recurring | Significant Unobservable Inputs (Level 3)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	210,000		210,000		574,000
Commercial mortgages, other | Other real estate owned: | Non-recurring
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	62,000		62,000		213,000
Total Gains (Losses)			0		0
Commercial mortgages, other | Other real estate owned: | Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	0		0		0
Commercial mortgages, other | Other real estate owned: | Non-recurring | Significant Other Observable Inputs (Level 2)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	0		0		0
Commercial mortgages, other | Other real estate owned: | Non-recurring | Significant Unobservable Inputs (Level 3)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	62,000		62,000		213,000
Home equity lines and loans | Other real estate owned: | Non-recurring
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net					157,000
Total Gains (Losses)					(14,000)
Home equity lines and loans | Other real estate owned: | Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net					0
Home equity lines and loans | Other real estate owned: | Non-recurring | Significant Other Observable Inputs (Level 2)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net					0
Home equity lines and loans | Other real estate owned: | Non-recurring | Significant Unobservable Inputs (Level 3)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net					157,000
Commercial mortgages
Impaired Loans, Fair Value Disclosure [Abstract]
Total Gains (Losses)	285,000	91,000	(1,074,000)	(278,000)
Commercial mortgages | Commercial mortgages | Impaired Loans: | Non-recurring
Impaired Loans, Fair Value Disclosure [Abstract]
Total impaired loans	7,627,000		7,627,000		1,456,000
Total Gains (Losses)			(1,673,000)		240,000
Commercial mortgages | Commercial mortgages | Impaired Loans: | Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Impaired Loans, Fair Value Disclosure [Abstract]
Total impaired loans	0		0		0
Commercial mortgages | Commercial mortgages | Impaired Loans: | Non-recurring | Significant Other Observable Inputs (Level 2)
Impaired Loans, Fair Value Disclosure [Abstract]
Total impaired loans	0		0		0
Commercial mortgages | Commercial mortgages | Impaired Loans: | Non-recurring | Significant Unobservable Inputs (Level 3)
Impaired Loans, Fair Value Disclosure [Abstract]
Total impaired loans	7,627,000		7,627,000		1,456,000
Residential mortgages
Impaired Loans, Fair Value Disclosure [Abstract]
Total Gains (Losses)	26,000	(11,000)	27,000	(300,000)
Residential mortgages | Other real estate owned: | Non-recurring
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	62,000		62,000		204,000
Total Gains (Losses)			0		0
Residential mortgages | Other real estate owned: | Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	0		0		0
Residential mortgages | Other real estate owned: | Non-recurring | Significant Other Observable Inputs (Level 2)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	0		0		0
Residential mortgages | Other real estate owned: | Non-recurring | Significant Unobservable Inputs (Level 3)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	62,000		62,000		$ 204,000
Consumer Loans
Impaired Loans, Fair Value Disclosure [Abstract]
Total Gains (Losses)	(101,000)	$ (95,000)	147,000	$ (892,000)
Consumer Loans | Home equity lines and loans | Other real estate owned: | Non-recurring
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	86,000		86,000
Total Gains (Losses)			0
Consumer Loans | Home equity lines and loans | Other real estate owned: | Non-recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	0		0
Consumer Loans | Home equity lines and loans | Other real estate owned: | Non-recurring | Significant Other Observable Inputs (Level 2)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	0		0
Consumer Loans | Home equity lines and loans | Other real estate owned: | Non-recurring | Significant Unobservable Inputs (Level 3)
Impaired Loans, Fair Value Disclosure [Abstract]
Total other real estate owned, net	$ 86,000		$ 86,000