CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)	Common Stock	Additional Paid-In Capital	Retained Earnings [Member] Adjustment	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Adjustment	Total
Balances at Dec. 31, 2019	$ 2,827,000	$ 10,525,000		$ 22,537,000	$ (209,000)		$ 35,680,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				1,123,000			1,122,820
Cash dividends, $0.30 per share				(850,000)			(850,000)
Dividends reinvested under dividend reinvestment plan	12,000	85,000					97,000
Other comprehensive income (loss)					455,000		455,000
Balances at Sep. 30, 2020	2,839,000	10,610,000		22,810,000	246,000		36,505,000
Balances at Dec. 31, 2020	2,842,000	10,640,000		23,071,000	540,000		37,093,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				1,962,000			1,962,090
Cash dividends, $0.30 per share				(853,000)			(853,000)
Dividends reinvested under dividend reinvestment plan	9,000	91,000					100,000
Other comprehensive income (loss)					(1,865,000)		(1,865,000)
Balances at Sep. 30, 2021	$ 2,851,000	$ 10,731,000	$ (1,472,000)	$ 22,708,000	$ (1,325,000)	$ (1,472,000)	$ 34,965,000