Note 2 - Community National Bancorporation and Community National Bank (Details) - USD ($)			1 Months Ended	12 Months Ended
	Jun. 27, 2013	May. 13, 2013	Jun. 30, 2015	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013		Jun. 26, 2013
Note 2 - Community National Bancorporation and Community National Bank (Details) [Line Items]
Debt Instrument, Unamortized Discount				$ 2,225,948		$ 2,363,265
Debt Instrument, Basis Spread on Variable Rate				3.10%
Line of Credit Facility, Remaining Borrowing Capacity				$ 346,601,432		$ 346,550,159
Bargain purchase gain								$ 1,841,385
Business Combination, Acquisition Related Costs								2,353,162
Revolving Credit Facility [Member]
Note 2 - Community National Bancorporation and Community National Bank (Details) [Line Items]
Line of Credit Facility, Current Borrowing Capacity				0
Long-term Line of Credit				$ 0
Community National Bancorporation and Community National Bank [Member]
Note 2 - Community National Bancorporation and Community National Bank (Details) [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired		100.00%
Business Combination, Consideration Transferred		$ 19,441,834						19,441,834
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)		834,715
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned		$ 13,180,150
Payments to Acquire Businesses, Gross		6,261,684			[1]		[1]	6,261,684	[1]
Finite-Lived Core Deposits, Gross		3,440,076
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		195,658,486						195,658,486
Certain Loans Acquired in Transfer, Accretable Yield		4,128,315		$ 640,194		$ 1,215,398
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Reclassifications to Nonaccretable Difference		397,894		71,677		$ 98,615
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Outstanding Balance		6,702,000
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value		4,125,175
Debt Instrument, Unamortized Discount		2,576,825
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		3,950,000						3,911,053
Termination Loans	$ 10,000,000
Term Loan Period	3 years
Line of Credit Facility, Remaining Borrowing Capacity				$ 10,000,000
Bargain purchase gain		1,841,385						1,841,385
Business Combination, Acquisition Related Costs								$ 2,353,162
Community National Bancorporation and Community National Bank [Member] | Revolving Credit Facility [Member]
Note 2 - Community National Bancorporation and Community National Bank (Details) [Line Items]
Line of Credit Facility, Current Borrowing Capacity		$ 4,400,000
Line of Credit Facility Revolving Days		364 days
Long-term Line of Credit										$ 10,000,000
Debt Instrument, Basis Spread on Variable Rate				2.50%
Community National Bancorporation and Community National Bank [Member] | Reported Value Measurement [Member]
Note 2 - Community National Bancorporation and Community National Bank (Details) [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		$ 3,033,022
Community National Bancorporation and Community National Bank [Member] | Estimate of Fair Value Measurement [Member]
Note 2 - Community National Bancorporation and Community National Bank (Details) [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		$ 2,207,891
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member]
Note 2 - Community National Bancorporation and Community National Bank (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.50%			2.50%
London Interbank Offered Rate (LIBOR) [Member] | Community National Bancorporation and Community National Bank [Member]
Note 2 - Community National Bancorporation and Community National Bank (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	3.00%							3.17%
CNB Branches [Member]
Note 2 - Community National Bancorporation and Community National Bank (Details) [Line Items]
Gains on sales of certain Community National Bank branches								$ 2,334,216
Core Deposits [Member]
Note 2 - Community National Bancorporation and Community National Bank (Details) [Line Items]
Finite-Lived Core Deposits, Gross				$ 1,995,127		$ 1,995,127
Finite-Lived Intangible Asset, Useful Life				10 years
Core Deposits [Member] | Community National Bancorporation and Community National Bank [Member]
Note 2 - Community National Bancorporation and Community National Bank (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life		10 years
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		$ 199,512
Finite-Lived Intangible Assets, Amortization Expense, Year Two		199,512
Finite-Lived Intangible Assets, Amortization Expense, Year Three		199,512
Finite-Lived Intangible Assets, Amortization Expense, Year Four		199,512
Finite-Lived Intangible Assets, Amortization Expense, Year Five		199,512
Finite-Lived Intangible Assets, Amortization Expense, after Year Five		$ 473,849

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