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Note 17 - Employee Benefits - Asset Allocation (Details)
Jun. 30, 2016
Jun. 30, 2015
United States Pension Plan of US Entity [Member] | Equity Securities [Member]    
Asset allocations 31.00% 33.00%
United States Pension Plan of US Entity [Member] | Debt Securities [Member]    
Asset allocations 34.00% 31.00%
United States Pension Plan of US Entity [Member] | Hedge Funds, Global Opportunity [Member]    
Asset allocations 25.00% 26.00%
United States Pension Plan of US Entity [Member] | Other Debt Obligations [Member]    
Asset allocations 10.00% 10.00%
United States Pension Plan of US Entity [Member]    
Asset allocations 100.00% 100.00%
Foreign Pension Plan [Member] | Equity Securities [Member]    
Asset allocations 26.00% 24.00%
Foreign Pension Plan [Member] | Debt Securities [Member]    
Asset allocations 57.00% 75.00%
Foreign Pension Plan [Member] | Hedge Funds, Global Opportunity [Member]    
Asset allocations 13.00% 0.00%
Foreign Pension Plan [Member] | Other Debt Obligations [Member]    
Asset allocations 4.00% 1.00%
Foreign Pension Plan [Member]    
Asset allocations 100.00% 100.00%