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Note 14 - Accrued Expenses (Details) - Accrued Expenses (USD $)
Dec. 31, 2014
Dec. 31, 2013
Accrued Expenses [Abstract]    
Salaries, wages, commissions and vacation pay $ 5,926,000us-gaap_EmployeeRelatedLiabilitiesCurrent $ 5,607,000us-gaap_EmployeeRelatedLiabilitiesCurrent
Accrued rebates 1,273,000us-gaap_AccruedMarketingCostsCurrent 826,000us-gaap_AccruedMarketingCostsCurrent
Other accrued expenses 1,796,000us-gaap_OtherAccruedLiabilitiesCurrent 1,335,000us-gaap_OtherAccruedLiabilitiesCurrent
$ 8,995,000us-gaap_OtherLiabilitiesCurrent $ 7,768,000us-gaap_OtherLiabilitiesCurrent