Investment Securities - Schedule of Securities Available for Sale (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Amortized Cost	$ 60,542,949	$ 54,253,823
Unrealized Gains	166,260	761,248
Unrealized Losses	1,427,818	751,810
Total Estimated Fair Value	59,281,391	54,263,261
U.S. Government Treasury Securities [Member]
Amortized Cost	981,003	979,983
Unrealized Gains	0	0
Unrealized Losses	43,853	12,213
Total Estimated Fair Value	937,150	967,770
U.S. Government Agency Securities [Member]
Amortized Cost	46,898,058	43,978,023
Unrealized Gains	132,172	580,366
Unrealized Losses	1,266,264	698,299
Total Estimated Fair Value	45,763,966	43,860,090
State and Municipal Securities [Member]
Amortized Cost	7,439,068	7,482,912
Unrealized Gains	7,832	129,231
Unrealized Losses	80,891	38,454
Total Estimated Fair Value	7,366,009	7,573,689
Residential Mortgage-Backed Securities [Member]
Amortized Cost	5,224,820	1,812,905
Unrealized Gains	26,256	51,651
Unrealized Losses	36,810	2,844
Total Estimated Fair Value	$ 5,214,266	$ 1,861,712