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Note 4 - Property and Equipment
6 Months Ended
Jun. 30, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
4.  
Property and Equipment

Property and equipment are summarized as follows (amounts in thousands):

   
June 30,
2013
   
December 31,
2012
 
Construction equipment
  $ 129,822     $ 130,014  
Transportation equipment
    19,782       19,266  
Buildings
    10,509       10,176  
Office equipment
    1,529       1,279  
Land
    4,936       4,916  
Water rights
    200       200  
      166,778       165,851  
Less accumulated depreciation
    (69,280 )     (63,543 )
    $ 97,498     $ 102,308