XML 43 R35.htm IDEA: XBRL DOCUMENT v3.2.0.727
Note 4 - Property and Equipment (Details) - Property and Equipment - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]    
Property, plant and equipment $ 162,898 $ 167,888
Less accumulated depreciation (82,085) (80,790)
80,813 87,098
Construction Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 122,907 129,150
Transportation Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 18,682 18,205
Building [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 10,796 10,777
Office Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 2,757 2,761
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 894 878
Construction in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 1,132 387
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment 5,530 5,530
Water Rights [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment $ 200 $ 200