Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Cash Flows from Operating Activities:
Net income	$ 14,952,537		$ 14,938,245		$ 13,106,240
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	2,812,645		2,695,578		2,350,303
Provision for loan/lease losses	6,807,000		5,930,420		4,370,767
Deferred income taxes	(1,165,009)		(1,021,991)		2,302,418
Stock-based compensation expense	891,619		792,279		849,760
Deferred compensation expense accrued	1,311,627		822,335		844,844
Losses on other real estate owned, net	447,272		545,340		1,332,972
Amortization of premiums on securities, net	1,809,804		3,574,097		3,946,551
Securities gains	(92,363)		(432,492)		(104,600)
Other-than-temporary impairment losses on securities					62,400
Loans originated for sale	(58,128,415)		(80,027,780)		(120,430,173)
Proceeds on sales of loans	61,435,064		86,231,767		122,143,407
Gains on sales of residential real estate loans, net	(460,721)		(836,065)		(1,388,142)
Gains on sales of government guaranteed portions of loans, net	(2,040,638)		(2,148,979)		(1,069,565)
Gain on sale of credit card loan receivables			(495,405)
Gain on sale of business			(2,334,216)
Increase in cash value of bank-owned life insurance	(1,721,507)		(1,786,023)		(1,609,208)
Decrease (increase) in other assets	(1,198,107)		7,650,490		1,153,373
Increase in other liabilities	414,134		1,017,133		2,793,570
Net cash provided by operating activities	25,599,915		32,036,253		30,654,917
Bargain purchase gain on Community National acquisition			(1,841,385)
Amortization of core deposit intangible	199,512		178,881
Accretion of acquisition fair value adjustments, net	(674,539)		(1,060,708)
Cash Flows from Investing Activities:
Net increase in federal funds sold	(7,345,000)		(540,000)		(5,775,000)
Net (increase) decrease in interest-bearing deposits at financial institutions	(2,289,765)		(8,660,888)		4,391,112
Proceeds from sales of other real estate owned	1,593,714		1,345,479		5,241,265
Purchase of derivative instruments	(2,071,650)
Activity in securities portfolio:
Purchases	(76,256,503)		(312,970,498)		(474,461,164)
Calls, maturities and redemptions	35,247,090		147,264,900		374,292,050
Paydowns	23,611,559		46,098,773		39,956,569
Sales	78,476,422		37,393,047		19,215,075
Activity in restricted investment securities:
Purchases	(1,912,050)		(7,264,600)		(4,584,300)
Redemptions	3,380,100		7,244,200		4,090,050
Purchases of bank-owned life insurance					(2,000,000)
Net increase in loans/leases originated and held for investment	(180,325,359)		(55,311,462)		(91,275,511)
Purchase of premises and equipment	(2,035,855)		(2,430,353)		(1,871,942)
Proceeds from sale of credit card loan receivables			10,674,723
Net cash received from Community National Acquisition			3,025,073
Net cash paid on sales of certain branches of Community National Bank			(30,425,618)
Net cash used in investing activities	(129,927,297)		(164,557,224)		(132,781,796)
Cash Flows from Financing Activities:
Net increase in deposits	32,695,797		108,923,293		168,656,312
Net (decrease) increase in short-term borrowings	119,058,703		(21,789,994)		(42,453,489)
Activity in Federal Home Loan Bank advances:
Advances	6,000,000		77,000,000		13,000,000
Calls and maturities	(27,850,000)		(82,000,000)		(24,400,000)
Net change in short-term and overnight advances	(6,000,000)		34,000,000		9,000,000
Net (decrease) increase in other borrowings			(200,000)		8,099
Proceeds from term debt	10,000,000		10,000,000
Principal payments on term debt	(2,125,000)
Advance (payment) on 364-day revolving note			(5,600,000)		2,000,000
Repayment of Community National's other borrowings at acquisition			(3,950,000)
Payment of cash dividends on common and preferred stock	(1,964,608)		(4,062,726)		(4,088,949)
Proceeds from issuance of common stock, net	620,641		582,742		994,174
Purchase of noncontrolling interests					(1,934,532)
Net cash provided by financing activities	100,611,611		112,903,315		110,558,615
Net (decrease) increase in cash and due from banks	(3,715,771)		(19,617,656)		8,431,736
Cash and due from banks, beginning	41,950,790		61,568,446		53,136,710
Cash and due from banks, ending	38,235,019		41,950,790		61,568,446
Supplemental Disclosures of Cash Flow Information, cash payments for:
Interest	16,826,619		17,953,357		19,962,937
Income and franchise taxes	4,541,000		3,011,244		1,345,000
Supplemental Schedule of Noncash Investing Activities:
Change in accumulated other comprehensive income (loss), unrealized gains (losses) on on securities available for sale and interest rate cap derivatives, net	11,708,770		(18,350,669)		(48,031)
Exchange of shares of common stock in connection with payroll taxes for restricted stock and options exercised	(177,984)		(434,545)		(10,415)
Transfers of loans to other real estate owned	5,594,256		7,115,008		2,143,017
Due from broker	2,290,930
Liability established for purchase of noncontrolling interest					2,847,687
Fair value of assets acquired:
Cash and due from banks *			9,286,757
Federal funds sold			12,335,000
Interest-bearing deposits at financial institutions			2,024,539
Securities available for sale			45,853,826
Loans/leases receivable held for investment, net			195,658,486
Premises and equipment, net			8,132,021
Core deposit intangible			3,440,076
Bank-owned life insurance			4,595,529
Restricted investment securities			1,259,375
Other real estate owned			550,326
Other assets			5,178,583
Total assets acquired			288,314,518
Fair value of liabilities assumed:
Deposits			255,045,071
Other borrowings			3,950,000
Junior subordinated debentures			4,125,175
Other liabilities			3,911,053
Total liabilities assumed			267,031,299
Net assets acquired			21,283,219
Consideration paid:
Cash paid *		[1]	6,261,684	[1]		[1]
Issuance of 834,715 shares of common stock			13,180,150
Total consideration paid			19,441,834
Bargain purchase gain			1,841,385
Assets sold:
Cash **		[2]	30,425,618	[2]		[2]
Loans receivable			54,458,870
Premises and equipment, net			2,373,822
Core deposit intangible			1,390,762
Other assets			138,899
Total assets sold			88,787,971
Liabilities sold:
Deposits			91,022,098
Other liabilities			100,089
Total liabilities sold			91,122,187
Gains on sales of certain branches of Community National Bank			2,334,216
Credit Card Issuing Operations [Member]
Adjustments to reconcile net income to net cash provided by operating activities
Gain on sale of business			(355,268)
Liabilities sold:
Gains on sales of certain branches of Community National Bank			355,268
CNB Branches [Member]
Adjustments to reconcile net income to net cash provided by operating activities
Gain on sale of business			(2,334,216)
Liabilities sold:
Gains on sales of certain branches of Community National Bank			2,334,216
Series F Noncumulative Perpetual Preferred Stock One [Member]
Activity in Federal Home Loan Bank advances:
Redemption of Cumulative Perpetual Preferred Stock, net					(10,223,000)
Series F Noncumulative Perpetual Preferred Stock Two [Member]
Activity in Federal Home Loan Bank advances:
Redemption of Cumulative Perpetual Preferred Stock, net	$ (29,823,922)

[1] Net cash received at closing totaled $3,025,073

[2] Net cash paid at closing totaled $30,425,618