Loans and Allowance for Loan Losses - Schedule of Allowance for Loan Losses Methodology (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Beginning balance	$ 3,161,834	$ 3,124,611	$ 3,032,242
Charge-offs	141,831	181,646	116,006
Recoveries	984	3,022	48,375
Net charge-offs	140,847	178,624	67,631
Provisions charged to operations	75,000	150,000	160,000
Individually evaluated for impairment	529,965	529,965	549,429
Collectively evaluated for impairment	2,566,022	2,566,022	2,575,182
Balance at end of period	3,095,987	3,095,987	3,124,611
Individually evaluated for impairment	8,717,736	8,717,736	8,071,512
Collectively evaluated for impairment	313,936,041	313,936,041	284,471,619
Balance at end of period	322,653,777	322,653,777	292,543,131
Commercial, Financial And Agricultural [Member]
Beginning balance	232,822	191,267	144,781
Charge-offs	79,334	113,334	103,387
Recoveries	783	1,638	28,303
Net charge-offs	78,551	111,696	75,084
Provisions charged to operations	55,049	129,749	121,570
Individually evaluated for impairment	65,455	65,455	12,021
Collectively evaluated for impairment	143,865	143,865	179,246
Balance at end of period	209,320	209,320	191,267
Individually evaluated for impairment	381,732	381,732	102,086
Collectively evaluated for impairment	76,372,623	76,372,623	70,897,337
Balance at end of period	76,754,355	76,754,355	70,999,423
Construction Real Estate [Member]
Beginning balance	1,043,083	1,043,083	1,043,083
Charge-offs	0	0	0
Recoveries	0	0	0
Net charge-offs	0	0	0
Provisions charged to operations	0	0	0
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	1,043,083	1,043,083	1,043,083
Balance at end of period	1,043,083	1,043,083	1,043,083
Individually evaluated for impairment	121,204	121,204	126,215
Collectively evaluated for impairment	26,130,103	26,130,103	25,873,080
Balance at end of period	26,251,307	26,251,307	25,999,295
Commercial Real Estate [Member]
Beginning balance	1,192,098	1,192,098	1,192,098
Charge-offs	0	0	0
Recoveries	0	0	0
Net charge-offs	0	0	0
Provisions charged to operations	0	0	0
Individually evaluated for impairment	232,451	232,451	245,472
Collectively evaluated for impairment	959,647	959,647	946,626
Balance at end of period	1,192,098	1,192,098	1,192,098
Individually evaluated for impairment	4,758,186	4,758,186	4,496,700
Collectively evaluated for impairment	94,356,400	94,356,400	87,236,112
Balance at end of period	99,114,586	99,114,586	91,732,812
Residential Real Estate [Member]
Beginning balance	417,835	420,189	381,891
Charge-offs	59,764	59,764	3,394
Recoveries	0	0	16,994
Net charge-offs	59,764	59,764	(13,600)
Provisions charged to operations	17,887	15,533	24,698
Individually evaluated for impairment	228,176	228,176	291,936
Collectively evaluated for impairment	147,782	147,782	128,253
Balance at end of period	375,958	375,958	420,189
Individually evaluated for impairment	2,383,377	2,383,377	2,281,439
Collectively evaluated for impairment	89,674,198	89,674,198	80,989,544
Balance at end of period	92,057,575	92,057,575	83,270,983
Agricultural Real Estate [Member]
Beginning balance	86,656	86,656	86,656
Charge-offs	0	0	0
Recoveries	0	0	0
Net charge-offs	0	0	0
Provisions charged to operations	0	0	0
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	86,656	86,656	86,656
Balance at end of period	86,656	86,656	86,656
Individually evaluated for impairment	1,054,610	1,054,610	1,061,826
Collectively evaluated for impairment	23,387,542	23,387,542	15,518,300
Balance at end of period	24,442,152	24,442,152	16,580,126
Consumer And Other [Member]
Beginning balance	189,340	191,318	183,733
Charge-offs	2,733	8,548	9,225
Recoveries	201	1,384	3,078
Net charge-offs	2,532	7,164	6,147
Provisions charged to operations	2,064	4,718	13,732
Individually evaluated for impairment	3,883	3,883	0
Collectively evaluated for impairment	184,989	184,989	191,318
Balance at end of period	188,872	188,872	191,318
Individually evaluated for impairment	18,627	18,627	3,246
Collectively evaluated for impairment	4,015,175	4,015,175	3,957,246
Balance at end of period	$ 4,033,802	$ 4,033,802	$ 3,960,492