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)	7,225
Common stock issued, $7 per share	$ 723	49,852	0	0	50,575
Costs associated with common stock issued	0	(99,011)	0	0	(99,011)
Other comprehensive income (loss)	0	0	1,187,754	0	1,187,754
Net loss	$ 0	0	0	(3,129,743)	(3,129,743)
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
Balance (in shares) at Mar. 31, 2020	7,740,700
Balance at Mar. 31, 2020	$ 774,071	23,204,894	624,464	(12,140,327)	12,463,102
Common stock issued, $7 per share (in shares)	529
Common stock issued, $7 per share	$ 53	3,650	0	0	3,703
Costs associated with common stock issued	0	(47,446)	0	0	(47,446)
Other comprehensive income (loss)	0	0	2,892,785	0	2,892,785
Net loss	$ 0	0	0	(426,372)	(426,372)
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
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	(92,157)	0	0	(92,157)
Other comprehensive income (loss)	0	0	(899,223)	0	(899,223)
Net loss	$ 0	0	0	(121,514)	(121,514)
Balance (in shares) at Jun. 30, 2021	7,745,404
Balance at Jun. 30, 2021	$ 774,541	22,998,144	2,665,652	(9,119,021)	17,319,316
Balance (in shares) at Mar. 31, 2021	7,742,573
Balance at Mar. 31, 2021	$ 774,258	23,023,211	1,299,026	(9,333,724)	15,762,771
Common stock issued, $7 per share (in shares)	2,831
Common stock issued, $7 per share	$ 283	19,534	0	0	19,817
Costs associated with common stock issued	0	(44,601)	0	0	(44,601)
Other comprehensive income (loss)	0	0	1,366,626	0	1,366,626
Net loss	$ 0	0	0	214,703	214,703
Balance (in shares) at Jun. 30, 2021	7,745,404
Balance at Jun. 30, 2021	$ 774,541	$ 22,998,144	$ 2,665,652	$ (9,119,021)	$ 17,319,316