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Note 15 - Employee Benefit Plans (Details) - Funded Status (Multiemployer Plans, Postretirement Benefit [Member])
Dec. 31, 2014
Dec. 31, 2013
Multiemployer Plans, Postretirement Benefit [Member]
    
Note 15 - Employee Benefit Plans (Details) - Funded Status [Line Items]    
Plan Funded Status per valuation report 115.98%us-gaap_DefinedBenefitPlanFundedPercentage
/ us-gaap_MultiemployerPlanTypeAxis
= us-gaap_MultiemployerPlansPostretirementBenefitMember		 [1] 81.32%us-gaap_DefinedBenefitPlanFundedPercentage
/ us-gaap_MultiemployerPlanTypeAxis
= us-gaap_MultiemployerPlansPostretirementBenefitMember		 [1]
[1] Market value of plan assets reflects any contributions received through June 30, 2014 and 2013, respectively.