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Note 8 - Property, Plant and Equipment (Details) - Components of Property, Plant and Equipment (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Property, Plant and Equipment [Line Items]    
Gross Property, plant and equipment $ 192,392 $ 192,817
Accumulated depreciation (147,709) (139,767)
44,683 53,050
Land and Land Improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Gross Property, plant and equipment 2,999 3,467
Building and Building Improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Gross Property, plant and equipment 26,053 25,351
Property, Plant and Equipment, Other Types [Member]
    
Property, Plant and Equipment [Line Items]    
Gross Property, plant and equipment 161,207 160,356
Construction in Progress [Member]
    
Property, Plant and Equipment [Line Items]    
Gross Property, plant and equipment $ 2,133 $ 3,643