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Note 4 - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Jun. 30, 2015
Land, Buildings and Leasehold Improvements [Member]    
Property, plant and equipment, gross $ 67,187 $ 71,517
Machinery, Equipment and Other [Member]    
Property, plant and equipment, gross 177,745 181,394
Property, plant and equipment, gross 244,932 252,911
Less accumulated depreciation 138,246 144,375
Property, plant and equipment - net $ 106,686 $ 108,536