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Note 4 - Property and Equipment
9 Months Ended
Sep. 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):

   
September 30,
2013
   
December 31,
2012
 
Construction equipment
  $ 129,547     $ 130,014  
Transportation equipment
    19,723       19,266  
Buildings
    10,512       10,176  
Office equipment
    1,722       1,279  
Land
    5,392       4,916  
Water rights
    200       200  
      167,096       165,851  
Less accumulated depreciation
    (71,170 )     (63,543 )
    $ 95,926     $ 102,308