Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 6,488,987	$ 4,062,665	$ 10,143,058	$ 11,959,716
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation			2,283,558	2,092,992
Provision for loan/lease losses	1,635,263	1,063,323	5,694,384	3,159,364
Stock-based compensation expense			758,493	703,274
Deferred compensation expense accrued			767,292	996,941
Losses (gains) on other real estate owned, net	(1,134,093)	(30,596)	(1,204,016)	114,109
Amortization of premiums on securities, net			756,876	1,470,641
Securities gains, net			(473,513)	(40,625)
Loans originated for sale			(29,968,289)	(32,643,486)
Proceeds on sales of loans			31,154,335	33,537,484
Gains on sales of residential real estate loans	(84,609)	(120,627)	(266,284)	(317,085)
Gains on sales of government guaranteed portions of loans	(759,668)	(158,736)	(899,987)	(860,923)
Losses on debt extinguishment			6,894,185
Amortization of core deposit intangible			149,634	149,634
Accretion of acquisition fair value adjustments, net			(334,990)	(549,604)
Increase in cash value of bank-owned life insurance			(1,318,909)	(1,276,901)
Increase in other assets			(5,211,555)	(346,977)
Increase in other liabilities			4,269,482	712,565
Net cash provided by operating activities			23,193,754	18,861,119
CASH FLOWS FROM INVESTING ACTIVITIES
Net decrease in federal funds sold			12,450,000	9,675,000
Net decrease (increase) in interest-bearing deposits at financial institutions			3,059,051	(1,586,856)
Proceeds from sales of other real estate owned			6,774,151	1,172,365
Purchase of derivative instruments				(2,071,650)
Activity in securities portfolio:
Purchases			(200,249,686)	(48,493,532)
Calls, maturities and redemptions			187,029,003	30,827,423
Paydowns			11,859,406	19,147,455
Sales			65,889,838	65,754,467
Activity in restricted investment securities:
Purchases			(2,806,650)	(1,653,450)
Redemptions			3,435,200	3,377,900
Net increase in loans/leases originated and held for investment			(129,356,790)	(115,589,620)
Purchase of premises and equipment			(4,327,671)	(1,587,828)
Net cash used in investing activities			(46,244,148)	(41,028,326)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposit accounts			175,656,866	66,893,213
Net increase (decrease) in short-term borrowings			(100,787,458)	12,893,731
Activity in Federal Home Loan Bank advances:
Term advances			5,000,000	2,000,000
Calls and maturities			(24,000,000)	(23,850,000)
Net change in short-term and overnight advances			24,000,000	(13,000,000)
Prepayments			(81,192,185)
Activity in other borrowings:
Proceeds from other borrowings				10,000,000
Calls, maturities and scheduled principal payments			(7,350,000)
Prepayments			(29,177,000)	(1,000,000)
Payment of cash dividends on common and preferred stock			(782,054)	(1,964,607)
Net cash provided by financing activities			25,868,616	22,542,594
Net increase in cash and due from banks			2,818,222	375,387
Cash and due from banks, beginning			38,235,019	41,950,790	$ 41,950,790
Cash and due from banks, ending	$ 41,053,241	$ 42,326,177	41,053,241	42,326,177	$ 38,235,019
Supplemental disclosure of cash flow information, cash payments for:
Interest			10,880,589	12,445,044
Income/franchise taxes			1,985,275	3,457,500
Supplemental schedule of noncash investing activities:
Change in accumulated other comprehensive income, unrealized gains on securities available for sale and derivative instruments, net			2,098,427	8,894,623
Exchange of shares of common stock in connection with payroll taxes for restricted stock and in connection with stock options exercised			(68,706)	(177,984)
Tax benefit of nonqualified stock options exercised			71,110	25,120
Transfers of loans to other real estate owned			942,782	2,237,268
Common Stock Offering 1 [Member]
Activity in other borrowings:
Proceeds from issuance of common stock, net			63,484,123
Common Stock Offering 2 [Member]
Activity in other borrowings:
Proceeds from issuance of common stock, net			$ 1,016,324	394,179
Series F Noncumulative Perpetual Preferred Stock One [Member]
Activity in other borrowings:
Redemption of Cumulative Perpetual Preferred Stock, net				(15,000,000)
Series F Noncumulative Perpetual Preferred Stock Two [Member]
Activity in other borrowings:
Redemption of Cumulative Perpetual Preferred Stock, net				$ (14,823,922)