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Note 18 - Employee Benefit Plans (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Minimum Number of Years Allowed to Participate in Employee Stock Ownership Plan | 2 years |  |
Minimum Number of Hours Allowed to Participate in Employee Stock Ownership Plan for Part Time Employees | 1000 hours |  |
Stock Issued During Period, Shares, Employee Stock Ownership Plan (in Shares) | 18,012 | 11,887 | 3,825
Stock Issued During Period, Value, Employee Stock Ownership Plan | $ 541,000 | $ 301,902 | $ 92,000
Employee Stock Ownership Plan (ESOP), Shares Contributed to ESOP (in Shares) | 107,202 | 73,439 | 51,779
Employee Stock Ownership Plan (ESOP), Shares in ESOP (in Shares) | 990,047 |  |
Percentage of Outstanding Common Stock Under Employee Stock Ownership Plan | 1.20% |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 75.00% |  |
Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 2,000,000 | $ 1,400,000 | $ 1,000,000
Percentage of Participant Borrowing Capacity of Vested Amount | 50.00% |  |
Less Than Two Years of Service [Member] |  |  |
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage | 0.00% |  |
Yearly After Two Years of Service [Member] |  |  |
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage | 25.00% |  |
Matched at 100 Percent [Member] |  |  |
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 4.00% |  |
Maximum [Member] |  |  |
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Employee Stock Ownership Plan (ESOP), Debt Structure, Direct Loan, Employer Cash Payments Used for Debt Service | $ 50,000 |  |
Minimum [Member] |  |  |
Note 18 - Employee Benefit Plans (Details) [Line Items] |  |  |
Employee Stock Ownership Plan (ESOP), Debt Structure, Direct Loan, Employer Cash Payments Used for Debt Service | $ 1,000 |  |

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- Definition Minimum number of hours allowed to participate in employee stock ownership plan for part time employees. + References No definition available. + Details
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- Definition Percentage of outstanding common stock under employee stock ownership plan. + References No definition available. + Details
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- Definition The amount of cash provided by the employer through contributions or dividends that the ESOP used in the period to repay debt and interest on a third-party loan made directly to the ESOP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6418455&loc=d3e16545-113920 + Details
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- Definition This item represents the number of shares provided to the Employee Stock Ownership Plan (ESOP) during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 + Details
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