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Note 11 - Derivative Financial Instruments - Foreign Currency Exchange Contracts (Details) - Foreign Exchange Contract [Member]
€ in Thousands, £ in Thousands, $ in Thousands, $ in Millions, $ in Millions
Dec. 31, 2018
USD ($)
Dec. 31, 2018
CAD ($)
Dec. 31, 2018
GBP (£)
Dec. 31, 2018
EUR (€)
Dec. 31, 2018
MXN ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2018
CAD ($)
Jun. 30, 2018
GBP (£)
Jun. 30, 2018
EUR (€)
Jun. 30, 2018
MXN ($)
United States of America, Dollars                    
Derivative, Notional Amount $ 59,786         $ 64,558        
Euro Member Countries, Euro                    
Derivative, Notional Amount | €       € 12,150         € 21,300  
United Kingdom, Pounds                    
Derivative, Notional Amount | £     £ 6,750         £ 6,826    
Mexico, Pesos                    
Derivative, Notional Amount         $ 54         $ 54
Canada, Dollars                    
Derivative, Notional Amount   $ 20.6         $ 20.6