Consolidated Statement of Changes in Shareholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2017	$ 4,293,835	$ 31,701,533	$ 33,020,030	$ (1,629,619)	$ (26,242,793)	$ 41,142,986
Net Income			2,380,054			2,380,054
Comprehensive income (loss):
Changes in net gain on securities available for sale				(1,004,087)		(1,004,087)
Cash dividend declared per share			(584,876)			(584,876)
Retirement of treasury stock	(1,748,059)	(12,994,133)	(11,500,601)		26,242,793
Balance at Jun. 30, 2018	2,545,776	18,707,400	23,314,607	(2,633,706)		41,934,077
Balance at Mar. 31, 2018	2,545,776	18,707,400	22,471,760	(2,398,975)		41,325,961
Net Income			1,147,687			1,147,687
Comprehensive income (loss):
Changes in net gain on securities available for sale				(234,731)		(234,731)
Cash dividend declared per share			(304,840)			(304,840)
Retirement of treasury stock
Balance at Jun. 30, 2018	2,545,776	18,707,400	23,314,607	(2,633,706)		41,934,077
Balance at Dec. 31, 2018	2,545,776	18,418,995	24,841,569	(2,187,396)		43,618,944
Net Income			2,526,915			2,526,915
Comprehensive income (loss):
Changes in net gain on securities available for sale				1,523,562		1,523,562
Cash dividend declared per share			(610,986)			(610,986)
Balance at Jun. 30, 2019	2,545,776	18,418,995	26,757,498	(663,834)		47,058,435
Balance at Mar. 31, 2019	2,545,776	18,418,995	25,764,780	(1,469,626)		45,259,925
Net Income			1,298,212			1,298,212
Comprehensive income (loss):
Changes in net gain on securities available for sale				805,792		805,792
Cash dividend declared per share			(305,494)			(305,494)
Balance at Jun. 30, 2019	$ 2,545,776	$ 18,418,995	$ 26,757,498	$ (663,834)		$ 47,058,435