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Note 4 - Property and Equipment
 6 Months Ended
Jun. 30, 2015
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,
2015		   December 31,
2014
         
Construction equipment   $ 122,907     $ 129,150  
Transportation equipment     18,682       18,205  
Buildings     10,796       10,777  
Office equipment     2,757       2,761  
Leasehold improvement     894       878  
Construction in progress     1,132       387  
Land     5,530       5,530  
Water rights     200       200  
      162,898       167,888  
Less accumulated depreciation     (82,085 )     (80,790 )
    $ 80,813     $ 87,098