SECURITIES - Securities Held to Maturity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Amortized cost and estimated fair value of securities held to maturity [Abstract]
Amortized Cost	$ 3,115,000	$ 4,875,000
Estimated Fair Value	3,139,000	4,858,000
Unrealized Gains	24,000	0
Unrealized Losses	0	17,000
Amortized Cost
Within one year	1,583,000
After one, but within five years	1,532,000
After five, but within ten years	0
After ten years	0
Total	3,115,000	4,875,000
Fair Value
Within one year	1,589,000
After one, but within five years	1,550,000
After five, but within ten years	0
After ten years	0
Total	3,139,000	4,858,000
Gain (loss) on sale of held-to-maturity securities	0	0
Obligations of states and political subdivisions
Amortized cost and estimated fair value of securities held to maturity [Abstract]
Amortized Cost	1,045,000	3,020,000
Estimated Fair Value	1,045,000	3,020,000
Unrealized Gains	0	0
Unrealized Losses	0	0
Amortized Cost
Total	1,045,000	3,020,000
Fair Value
Total	1,045,000	3,020,000
Time deposits with other financial institutions
Amortized cost and estimated fair value of securities held to maturity [Abstract]
Amortized Cost	2,070,000	1,855,000
Estimated Fair Value	2,094,000	1,838,000
Unrealized Gains	24,000	0
Unrealized Losses	0	17,000
Amortized Cost
Total	2,070,000	1,855,000
Fair Value
Total	$ 2,094,000	$ 1,838,000