Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 20,995,346	$ 17,950,982
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	2,074,618	1,847,963
Provision for loan/lease losses	4,840,574	4,128,102
Stock-based compensation expense	787,405	557,067
Deferred compensation expense accrued	1,004,010	724,422
Losses on other real estate owned, net	118,159	3,596
Amortization of premiums on securities, net	828,972	1,005,121
Securities gains, net		(38,464)
Loans originated for sale	(21,899,515)	(32,130,683)
Proceeds on sales of loans	22,071,837	33,807,027
Gains on sales of residential real estate loans	(202,587)	(208,951)
Gains on sales of government guaranteed portions of loans	(358,434)	(1,037,694)
Amortization of core deposit intangible	609,102	461,733
Accretion of acquisition fair value adjustments, net	(496,561)	(3,578,379)
Increase in cash value of bank-owned life insurance	(817,260)	(929,046)
Increase (decrease) in other assets	(5,878,796)	3,412,207
Decrease (increase) in other liabilities	5,688,375	(7,059,305)
Net cash provided by operating activities	29,365,245	18,915,698
CASH FLOWS FROM INVESTING ACTIVITIES
Net decrease in federal funds sold	19,331,000	3,074,000
Net decrease in interest-bearing deposits at financial institutions	14,963,624	10,777,600
Proceeds from sales of other real estate owned	736,370	487,815
Activity in securities portfolio:
Purchases	(54,950,828)	(85,169,891)
Calls, maturities and redemptions	12,618,640	33,079,683
Paydowns	27,187,398	21,606,220
Sales	0	13,554,075
Activity in restricted investment securities:
Purchases	(4,215,275)	(2,407,600)
Redemptions	109,200	1,300,700
Net increase in loans/leases originated and held for investment	(150,992,827)	(146,365,255)
Purchase of premises and equipment	(2,666,098)	(2,422,880)
Net cash used in investing activities	(137,878,796)	(152,485,533)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in deposit accounts	31,652,051	201,041,035
Net increase (decrease) in short-term borrowings	3,592,483	(21,753,994)
Activity in Federal Home Loan Bank advances:
Calls and maturities	(10,000,000)	(6,000,000)
Net change in short-term and overnight advances	72,100,000	(25,000,000)
Activity in other borrowings:
Proceeds from other borrowings	9,000,000
Calls, maturities and scheduled principal payments	(3,875,000)	(8,000,000)
Payment of cash dividends on common stock	(1,526,604)	(1,179,146)
Proceeds from issuance of common stock, net	918,361	1,053,300
Net cash provided by financing activities	101,861,291	140,161,195
Net increase in cash and due from banks	(6,652,260)	6,591,360
Cash and due from banks, beginning	75,721,663	70,569,993
Cash and due from banks, ending	69,069,403	77,161,353
Supplemental Disclosures of Cash Flow Information, cash payments for:
Interest	12,303,768	7,876,668
Income/franchise taxes	1,010,097	7,450,738
Supplemental schedule of noncash investing activities:
Change in accumulated other comprehensive income, unrealized gains on securities available for sale and derivative instruments, net	(4,536,161)	1,112,478
Exchange of shares of common stock in connection with payroll taxes for restricted stock and in connection with stock options exercised	(194,304)	(317,614)
Transfers of loans to other real estate owned	46,244	141,828
Due to broker for purchases of securities		(4,662,631)
Dividends payable	835,881	657,003
Decrease (increase) in the fair value of interest rate swap assets and liabilities	1,774,502	$ (209,185)
Transfer of equity securities from securities available for sale to other assets at fair value	$ 2,614,261