SECURITIES - Securities Held to Maturity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Amortized cost and estimated fair value of securities held to maturity [Abstract]
Amortized Cost	$ 2,469,000	$ 3,115,000
Estimated Fair Value	2,501,000	3,139,000
Unrealized Gains	32,000	24,000
Unrealized Losses	0	0
Amortized Cost
Within one year	856,000
After one, but within five years	1,613,000
After five, but within ten years	0
After ten years	0
Total	2,469,000	3,115,000
Fair Value
Within one year	863,000
After one, but within five years	1,638,000
After five, but within ten years	0
After ten years	0
Total	2,501,000	3,139,000
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	326,000	1,045,000
Estimated Fair Value	326,000	1,045,000
Unrealized Gains	0	0
Unrealized Losses	0	0
Amortized Cost
Total	326,000	1,045,000
Fair Value
Total	326,000	1,045,000
Time deposits with other financial institutions
Amortized cost and estimated fair value of securities held to maturity [Abstract]
Amortized Cost	2,143,000	2,070,000
Estimated Fair Value	2,175,000	2,094,000
Unrealized Gains	32,000	24,000
Unrealized Losses	0	0
Amortized Cost
Total	2,143,000	2,070,000
Fair Value
Total	$ 2,175,000	$ 2,094,000