Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 4,177,889	$ 3,889,215
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	745,268	692,562
Provision for loan/lease losses	1,710,456	1,094,162
Stock-based compensation expense	367,775	347,752
Deferred compensation expense accrued	437,600	347,850
Losses on other real estate owned, net	28,953	18,048
Amortization of premiums on securities, net	214,427	535,951
Securities gains	(421,066)	(20,625)
Loans originated for sale	(6,647,937)	(6,354,404)
Proceeds on sales of loans	6,569,050	7,678,600
Gains on sales of residential real estate loans	(86,140)	(63,487)
Gains on sales of government guaranteed portions of loans	(70,973)	(194,019)
Amortization of core deposit intangible	49,878	49,878
Accretion of acquisition fair value adjustments, net	(178,380)	(161,042)
Increase in cash value of bank-owned life insurance	(478,739)	(454,164)
Decrease in other assets	486,879	3,804,360
Decrease in other liabilities	(1,840,279)	(8,049,459)
Net cash provided by operating activities	5,064,661	3,161,178
CASH FLOWS FROM INVESTING ACTIVITIES
Net decrease in federal funds sold	32,745,000	27,865,000
Net decrease (increase) in interest-bearing deposits at financial institutions	18,215,699	(11,344,360)
Proceeds from sales of other real estate owned	331,151	97,120
Activity in securities portfolio:
Purchases	(124,568,138)	(26,142,834)
Calls, maturities and redemptions	83,794,967	10,563,599
Paydowns	4,073,422	6,547,632
Sales	54,971,056	7,020,625
Activity in restricted investment securities:
Purchases	(146,300)	(1,040,000)
Redemptions	3,800	814,900
Net increase in loans/leases originated and held for investment	(25,689,344)	(33,066,658)
Purchase of premises and equipment	(3,197,547)	(563,035)
Net cash provided by (used in) investing activities	40,533,766	(19,248,011)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposit accounts	54,603,339	24,915,536
Net increase (decrease) in short-term borrowings	(85,015,951)	16,276,145
Activity in Federal Home Loan Bank advances:
Term advances	5,000,000
Calls and maturities	(5,000,000)	(20,350,000)
Net change in short-term and overnight advances	(7,000,000)	24,700,000
Principal payments on term debt	(1,175,000)	(200,000)
Payment of cash dividends on common and preferred stock	(315,955)	(941,177)
Proceeds from issuance of common stock, net	208,387	179,841
Net cash provided by (used in) by financing activities	(38,695,180)	29,580,345
Net increase in cash and due from banks	6,903,247	13,493,512
Cash and due from banks, beginning	38,235,019	41,950,790
Cash and due from banks, ending	45,138,266	55,444,302
Supplemental disclosure of cash flow information, cash payments for:
Interest	4,103,459	4,140,254
Income/franchise taxes	1,618,064	1,365,000
Supplemental schedule of noncash investing activities:
Change in accumulated other comprehensive income, unrealized gains on securities available for sale and derivative instruments, net	2,220,865	5,230,784
Exchange of shares of common stock in connection with payroll taxes for restricted stock and in connection with stock options exercised	(57,460)	(177,984)
Transfers of loans to other real estate owned	837,782	60,750
Series F Noncumulative Perpetual Preferred Stock One [Member]
Activity in Federal Home Loan Bank advances:
Redemption of 15,000 shares of Series F Noncumulative Perpetual Preferred Stock, net		$ (15,000,000)