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Note 4 - Property (Tables)
9 Months Ended
Sep. 30, 2016
Notes Tables  
Property, Plant and Equipment [Table Text Block]
 
 
September 30,
2016
 
 
December 31,
2015
 
 
 
(in thousands)
 
Land
  $ 5,063     $ 5,133  
Land improvements
    19,667       19,687  
Buildings
    32,589       32,589  
Machinery and equipment
    11,712       11,717  
Total property
    69,031       69,126  
Less accumulated depreciation
    37,888       36,608  
Net property
  $ 31,143     $ 32,518