CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 6,922,934	$ 4,901,825	$ 5,247,063
Adjustments to reconcile net income net cash provided by operating activities:
Depreciation	195,921	193,298	189,188
Gain on sale of investment securities	(4,735)	(45,820)	(380,904)
Loss on sale of other real estate owned	33,476	1,477	13,450
Loss on disposal of premises, equipment, and leasehold improvements, net	428
Valuation and other adjustments to other real estate owned	23,637	86,464
Provision for loan losses	325,000	55,000	570,000
Stock-based compensation expense	72,408	71,701	76,529
Deferred income taxes	(217,637)	276,362	(750,254)
Net amortization of unearned discounts on investment securities available for sale	303,530	381,079	250,755
Origination of mortgage loans held for sale	(55,504,124)	(55,791,625)	(76,032,671)
Proceeds from sale of mortgage loans held for sale	56,398,409	58,084,112	77,466,700
Decrease (increase) in accrued interest receivable and other assets	472,740	(78,328)	(63,949)
Increase (decrease) in accrued interest payable and other liabilities	295,071	46,412	(543,083)
Net cash provided by operating activities	9,317,058	8,181,957	6,042,824
Cash flows from investing activities:
Proceeds from calls and maturities of investment securities available for sale	6,932,927	4,713,870	9,630,804
Proceeds from sale of investment securities available for sale	21,434,634	20,231,265	36,218,087
Purchase of investment securities available for sale	(9,978,050)	(44,944,586)	(48,239,241)
Proceeds from sale of other real estate owned	378,366	89,355	85,001
Net decrease in loans	(4,469,694)	(9,726,576)	(18,089,620)
Purchase of premises, equipment, and leasehold improvements, net	(287,031)	(141,199)	(196,584)
Net cash provided by (used in) investing activities	14,011,152	(29,777,871)	(20,591,553)
Cash flows from financing activities:
Net (decrease) increase in deposit accounts	(20,509,912)	30,365,449	13,804,239
Dividends paid	(3,699,845)	(2,832,489)	(2,613,715)
Stock options exercised	193,569	340,843	405,749
Net cash (used in) provided by financing activities	(24,016,188)	27,873,803	11,596,273
Net (decrease) increase in cash and cash equivalents	(687,978)	6,277,889	(2,952,456)
Cash and cash equivalents at the beginning of the period	32,520,219	26,242,330	29,194,786
Cash and cash equivalents at the end of the period	31,832,241	32,520,219	26,242,330
Cash paid during the period for:
Interest	626,700	379,302	400,531
Income taxes	1,169,085	2,496,047	2,320,830
Supplemental disclosures for non-cash investing and financing activity:
Change in unrealized gain on securities available for sale, net of income taxes	(705,525)	(276,879)	(1,599,658)
Change in dividends payable	$ 85,615	53,340	$ 54,706
Transfer of loans to other real estate owned		$ 90,832