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Note 4 - Property and Equipment (Tables)
 3 Months Ended
Mar. 31, 2017
Notes Tables  
Property, Plant and Equipment [Table Text Block]
 
 
March 31,
 
 
December 31,
 
 
 
2017
 
 
2016
 
Land and land improvements
   $
14,118
    $
14,118
 
Buildings and improvements
    
34,043
     
33,533
 
Machinery and equipment
    
9,056
     
9,015
 
Vehicles
    
445
     
445
 
Office furniture and fixtures
    
6,232
     
5,963
 
Construction in progress
    
183
     
479
 
     
64,077
     
63,553
 
Less accumulated depreciation and amortization
    
(20,198
 )    
(19,582
 )
Property and equipment, net
   $
43,879
    $
43,971