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Note 10 - Property, Plant and Equipment - Property, Plant and Equipment Components (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Gross property, plant and equipment $ 62,083 $ 87,416
Accumulated depreciation (46,509) (69,473)
Property plant and equipment net 15,574 17,943
Capital Leased Assets, Gross 4,264 2,853
Accumulated depreciation (548) (238)
Capital Leased Assets, Net 3,716 2,615
Land and Land Improvements [Member]    
Gross property, plant and equipment 219 219
Building and Building Improvements [Member]    
Gross property, plant and equipment 11,140 10,056
Capital Leased Assets, Gross 2,987 2,853
Machinery, Equipment, Furniture, and Fixtures [Member]    
Capital Leased Assets, Gross 1,277 0
Property, Plant and Equipment, Other Types [Member]    
Gross property, plant and equipment 49,726 76,495
Construction in Progress [Member]    
Gross property, plant and equipment $ 998 $ 646