Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Interest and dividend income:
Interest and fees on loans	$ 8,677,914	$ 7,291,931
Securities:
Residential mortgage-backed and related securities	435,673	545,450
State and municipal securities	477,921	537,981
Dividends on non-marketable equity securities	12,084	11,453
Interest-bearing deposits	30,322	36,170
Total interest and dividend income	9,633,914	8,422,985
Interest expense:
Deposits	963,242	820,316
Borrowings	81,625	36,127
Total interest expense	1,044,867	856,443
Net interest income	8,589,047	7,566,542
Provision for loan losses	575,000	442,500
Net interest income after provision for loan losses	8,014,047	7,124,042
Other income:
Gain on sale of securities	98,230	8,418
Gain on sale of loans, net	696,754	509,440
Gain on sale of foreclosed real estate	44,773	188,207
Gain on sale of repossessed assets	16,589	10,641
Loan origination and servicing income	633,984	364,142
Origination of mortgage servicing rights, net of amortization	71,978	65,617
Customer service fees	482,525	441,890
Increase in cash surrender value of life insurance	48,222	50,154
Other	115,755	110,012
Total other income	2,208,810	1,748,521
Other expenses:
Salaries and employee benefits	4,303,658	3,681,189
Directors fees	163,200	163,200
Occupancy	644,103	636,809
Deposit insurance premium	57,189	113,151
Legal and professional services	360,721	308,938
Data processing	593,871	529,665
Loss on sale of securities	127,343	3,261
Loan expense	592,531	446,963
Valuation adjustments and expenses on foreclosed real estate	11,937	104,569
Loss on sale of foreclosed real estate		4,716
Loss on sale of repossessed assets	1,903	4,876
Other	1,048,628	1,014,334
Total other expenses	7,905,084	7,011,671
Income before income tax expense	2,317,773	1,860,892
Income tax expense	1,503,749	599,794
Net income	$ 814,024	$ 1,261,098
Basic earnings per share (in dollars per share)	$ 0.25	$ 0.43
Diluted earnings per share (in dollars per share)	0.25	0.42
Dividends per share (in dollars per share)	$ 0.16