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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

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- Definition Change in the estimate of cash flows expected to be collected, after acquisition of a loan, which results in a decrease in accretable yield (for example, as a result of an other-than-temporary impairment). This relates to loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
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- Definition The undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. This relates to loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
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- Definition Definite liabilities to third parties under a termination loan agreement, whether or not guaranteed in whole or in part by the government. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 912 -SubTopic 405 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=51658866&loc=d3e56288-109415 + Details
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