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Note 3 - Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Property, plant and equipment gross $ 1,867,683 $ 1,837,440
Less accumulated depreciation (1,250,944) (1,217,819)
Property, plant and equipment, net 616,739 619,621
Other Capitalized Property Plant and Equipment [Member]    
Property, plant and equipment gross 1,069,545 1,048,790
Equipment [Member]    
Property, plant and equipment gross 179,893 181,852
Furniture and Fixtures [Member]    
Property, plant and equipment gross 371,429 359,957
Building and Leasehold Improvements[Member]    
Property, plant and equipment gross 89,021 88,592
Software and Software Development Costs [Member]    
Property, plant and equipment gross 87,591 83,815
Construction in Progress [Member]    
Property, plant and equipment gross 60,592 64,822
Land [Member]    
Property, plant and equipment gross $ 9,612 $ 9,612