Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2019	7,734,004
Balance at Dec. 31, 2019	$ 773,401	$ 23,210,257	$ 2,329,495	$ (9,436,956)	$ 16,876,197
Common stock issued, $7 per share (in shares)	7,354
Common stock issued, $7 per share	$ 736	50,742	0	0	51,478
Costs associated with common stock issued	0	(144,863)	0	0	(144,863)
Other comprehensive income (loss)	0	0	1,750,472	0	1,750,472
Net loss	$ 0	0	0	(2,057,588)	(2,057,588)
Balance (in shares) at Sep. 30, 2020	7,741,358
Balance at Sep. 30, 2020	$ 774,137	23,116,136	4,079,967	(11,494,544)	16,475,696
Balance (in shares) at Jun. 30, 2020	7,741,229
Balance at Jun. 30, 2020	$ 774,124	23,161,098	3,517,249	(12,566,699)	14,885,772
Common stock issued, $7 per share (in shares)	129
Common stock issued, $7 per share	$ 13	890	0	0	903
Costs associated with common stock issued	0	(45,852)	0	0	(45,852)
Other comprehensive income (loss)	0	0	562,718	0	562,718
Net loss	$ 0	0	0	1,072,155	1,072,155
Balance (in shares) at Sep. 30, 2020	7,741,358
Balance at Sep. 30, 2020	$ 774,137	23,116,136	4,079,967	(11,494,544)	16,475,696
Balance (in shares) at Dec. 31, 2020	7,741,487
Balance at Dec. 31, 2020	$ 774,150	23,063,273	3,564,875	(8,997,507)	18,404,791
Common stock issued, $7 per share (in shares)	3,917
Common stock issued, $7 per share	$ 391	27,028	0	0	27,419
Costs associated with common stock issued	0	(125,709)	0	0	(125,709)
Other comprehensive income (loss)	0	0	(1,103,253)	0	(1,103,253)
Net loss	$ 0	0	0	(188,365)	(188,365)
Balance (in shares) at Sep. 30, 2021	7,745,404
Balance at Sep. 30, 2021	$ 774,541	22,964,592	2,461,622	(9,185,872)	17,014,883
Balance (in shares) at Jun. 30, 2021	7,745,404
Balance at Jun. 30, 2021	$ 774,541	22,998,144	2,665,652	(9,119,023)	17,319,314
Common stock issued, $7 per share	0	0	0	0	0
Costs associated with common stock issued	0	(33,552)	0	0	(33,552)
Other comprehensive income (loss)	0	0	(204,030)	0	(204,030)
Net loss	$ 0	0	0	(66,849)	(66,849)
Balance (in shares) at Sep. 30, 2021	7,745,404
Balance at Sep. 30, 2021	$ 774,541	$ 22,964,592	$ 2,461,622	$ (9,185,872)	$ 17,014,883