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Note 4 - Property and Equipment
9 Months Ended
Sep. 30, 2014
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,
2014
   
December 31,
2013
 
Construction equipment
  $ 130,412     $ 127,199  
Transportation equipment
    18,461       19,132  
Buildings
    10,512       10,512  
Office equipment
    2,780       2,025  
Leasehold improvement
    867       816  
Construction in progress
    424       -  
Land
    5,517       5,309  
Water rights
    200       200  
      169,173       165,193  
Less accumulated depreciation
    (78,720 )     (71,510 )
    $ 90,453     $ 93,683