CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 4,731,249	$ 3,414,771
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	(560,383)	(645,364)
Provision for loan losses	797,129	688,796	$ 2,936,000
Stock compensation expense	143,389	103,177
Deferred income tax expense	1,038,865	1,315,696
Income on bank owned life insurance	(158,027)	(150,066)
Loss on disposal of fixed assets	6,961	40,956
Net gains from sale of loans and other assets	(281,903)	(325,345)
Net losses from sale of foreclosed assets	25,558	146,540
Loans originated for sale	(16,804,564)	(10,213,891)
Proceeds from sale of loans originated for sale	16,061,157	11,217,169
Changes in other assets and liabilities:
Accrued interest receivable	(1,092,865)	(352,171)
Accrued interest payable	747,512	21,507
Other assets and liabilities	3,040,906	(2,618,866)
Net cash provided by operating activities	7,694,984	2,642,909
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from sales, maturities, and paydowns of securities available-for-sale	8,172,785	5,007,826
Purchase of securities available-for-sale	(1,053,710)	(11,239,649)
Purchase of restricted investments	(898,950)	(1,377,600)
Loan originations and principal collections, net	(61,010,912)	(50,058,787)
Purchase of bank premises and equipment	(1,296,250)	(1,830,300)
Proceeds from sale of foreclosed assets	458,157	320,417
Net cash used in investing activities	(55,628,880)	(59,178,093)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	72,166,029	60,954,797
Net decrease in securities sold under agreements to repurchase	(4,686,255)	(8,086,929)
Issuance of common stock	263,714	950,521
Proceeds from Federal Home Loan Bank advances and other borrowings	50,094,474	65,000,000
Repayment of Federal Home Loan Bank advances and other borrowings	(52,732,090)	(78,600,000)
Net cash provided by financing activities	65,105,872	40,218,389
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	17,171,976	(16,316,795)
CASH AND CASH EQUIVALENTS, beginning of year	115,822,459	113,026,884	113,026,884
CASH AND CASH EQUIVALENTS, end of period	132,994,435	96,710,089	$ 115,822,459
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid during the period for interest	5,197,783	2,545,226
NONCASH INVESTING AND FINANCING ACTIVITIES
Change in unrealized losses on securities available for sale	(3,030,984)	1,817,388
Acquisition of real estate through foreclosure	54,520	135,038
Financed sales of foreclosed assets	0	257,416
Change in goodwill due to acquisition	$ 0	$ 10,778