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Note 13 - Benefit Plans (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Note 13 - Benefit Plans (Details) [Line Items]    
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 0us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount $ 0us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Minimum [Member]    
Note 13 - Benefit Plans (Details) [Line Items]    
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 1.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Maximum [Member]    
Note 13 - Benefit Plans (Details) [Line Items]    
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 15.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
/ us-gaap_RangeAxis
= us-gaap_MaximumMember