Consolidated Statements of Cash Flows	12 Months Ended
	Dec. 31, 2015 USD ($)		Dec. 31, 2014 USD ($)		Dec. 31, 2013 USD ($)
Cash Flows from Operating Activities:
Net income	$ 16,927,881		$ 14,952,537		$ 14,938,245
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	3,065,031		2,812,645		2,695,578
Provision for loan/lease losses	6,870,900		6,807,000		5,930,420
Deferred income taxes	(2,004,532)		(1,165,009)		(1,021,991)
Stock-based compensation expense	941,469		891,619		792,279
Deferred compensation expense accrued	1,023,827		1,311,627		822,335
Losses (gains) on sale of other real estate owned, net	(1,021,242)		447,272		545,340
Amortization of premiums on securities, net	1,040,275		1,809,804		3,574,097
Securities gains, net	(798,983)		(92,363)		(432,492)
Loans originated for sale	(38,748,100)		(58,128,415)		(80,027,780)
Proceeds on sales of loans	40,362,697		61,435,064		86,231,767
Gains on sales of residential real estate loans, net	(322,872)		(460,721)		(836,065)
Gains on sales of government guaranteed portions of loans, net	(1,304,575)		(2,040,638)		(2,148,979)
Gain on sale of credit card loan receivables					(495,405)
Increase in cash value of bank-owned life insurance	(1,762,107)		(1,721,507)		(1,786,023)
Decrease (increase) in other assets	(3,910,486)		(1,198,107)		7,650,490
Increase in other liabilities	2,721,335		414,134		1,017,133
Net cash provided by operating activities	30,098,622		25,599,915		32,036,253
Bargain purchase gain on Community National acquisition					(1,841,385)
Losses on debt extinguishment	7,485,601
Gain on debt extinguishment	(300,000)
Amortization of core deposit intangible	199,512		199,512		178,881
Accretion of acquisition fair value adjustments, net	(367,009)		(674,539)		(1,060,708)
Cash Flows from Investing Activities:
Net (increase) decrease in federal funds sold	26,930,000		(7,345,000)		(540,000)
Net increase in interest-bearing deposits at financial institutions	(763,749)		(2,289,765)		(8,660,888)
Proceeds from sales of other real estate owned	7,696,026		1,593,714		1,345,479
Purchase of derivative instruments			(2,071,650)
Activity in securities portfolio:
Purchases	(232,092,732)		(76,256,503)		(312,970,498)
Calls, maturities and redemptions	211,942,737		35,247,090		147,264,900
Paydowns	15,476,369		23,611,559		46,098,773
Sales	81,410,368		78,476,422		37,393,047
Activity in restricted investment securities:
Purchases	(3,752,450)		(1,912,050)		(7,264,600)
Redemptions	4,476,100		3,380,100		7,244,200
Net increase in loans/leases originated and held for investment	(172,786,032)		(180,325,359)		(55,311,462)
Purchase of premises and equipment	(4,394,255)		(2,035,855)		(2,430,353)
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	(65,857,618)		(129,927,297)		(164,557,224)
Cash Flows from Financing Activities:
Net increase in deposits	200,988,645		32,695,797		108,923,293
Net (decrease) increase in short-term borrowings	(123,688,954)		119,058,703		(21,789,994)
Activity in Federal Home Loan Bank advances:
Term advances	5,000,000		6,000,000		77,000,000
Calls and maturities	(26,000,000)		(27,850,000)		(82,000,000)
Net change in short-term and overnight advances	47,000,000		(6,000,000)		34,000,000
Prepayments	(84,401,601)		0
Activity in other borrowings:
Proceeds from other borrowings			10,000,000		10,000,000
Calls, maturities and scheduled principal payments	(7,350,000)		(2,125,000)		(5,800,000)
Prepayments	(34,559,000)
Retirement of junior subordinated debentures	(1,762,000)
Repayment of Community National's other borrowings at acquisition					(3,950,000)
Payment of cash dividends on common and preferred stock	(782,054)		(1,964,608)		(4,062,726)
Cash and due from banks, beginning	38,235,019		41,950,790		61,568,446
Cash and due from banks, ending	41,957,855		38,235,019		41,950,790
Redemption of 29,867 shares of Series F Noncumulative Perpetual Preferred Stock, net			(29,823,922)
Supplemental Disclosures of Cash Flow Information, cash payments for:
Interest	14,027,512		16,826,619		17,953,357
Income and franchise taxes	2,619,288		4,541,000		3,011,244
Supplemental Schedule of Noncash Investing and Financing Activities:
Change in accumulated other comprehensive income (loss), unrealized gains (losses) on on securities available for sale and derivative instruments, net	(188,613)		11,708,770		(18,350,669)
Exchange of shares of common stock in connection with payroll taxes for restricted stock and options exercised	(68,706)		(177,984)		(434,545)
Tax benefit of nonqualified stock options exercised	93,096		42,954		62,371
Transfers of loans to other real estate owned	1,577,060		5,594,256		7,115,008
Due from broker			2,290,930
Dividends payable	468,583		315,955		567,677
Consideration paid:
Bargain purchase gain					1,841,385
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	1,552,673		620,641		582,742
Net cash provided by financing activities	39,481,832		100,611,611		112,903,315
Net (decrease) increase in cash and due from banks	$ 3,722,836		(3,715,771)		(19,617,656)
Series F Noncumulative Perpetual Preferred Stock Two [Member]
Activity in other borrowings:
Redemption of 29,867 shares of Series F Noncumulative Perpetual Preferred Stock, net			$ (29,823,922)
Credit Card Issuing Operations [Member]
Adjustments to reconcile net income to net cash provided by operating activities
Gain on disposal 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 disposal of business					(2,334,216)
Assets sold:
Cash **					30,425,618
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
Community National Bancorporation and Community National Bank [Member]
Adjustments to reconcile net income to net cash provided by operating activities
Bargain purchase gain on Community National acquisition					(1,841,385)
Fair value of assets acquired:
Cash and due from banks *		[1]		[1]	9,286,757	[1]
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]		[1]	6,261,684	[1]
Issuance of 834,715 shares of common stock					13,180,150
Total consideration paid					19,441,834
Bargain purchase gain					$ 1,841,385

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