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Note 4 - Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Other Capitalized Property Plant and Equipment [Member]    
Property, plant and equipment gross $ 1,042,946 $ 1,017,250
Equipment [Member]    
Property, plant and equipment gross 265,355 259,678
Furniture and Fixtures [Member]    
Property, plant and equipment gross 335,713 317,696
Building and Leasehold Improvements[Member]    
Property, plant and equipment gross 85,538 84,503
Software and Software Development Costs [Member]    
Property, plant and equipment gross 77,457 75,027
Construction in Progress [Member]    
Property, plant and equipment gross 61,296 89,742
Land [Member]    
Property, plant and equipment gross 9,482 9,482
Property, plant and equipment gross 1,877,787 1,853,378
Less accumulated depreciation (1,245,095) (1,212,811)
$ 632,692 $ 640,567