XML 39 R28.htm IDEA: XBRL DOCUMENT v3.5.0.2
Note 3 - Property and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Construction Equipment [Member]    
Property, plant and equipment, gross $ 121,735 $ 114,724
Transportation Equipment [Member]    
Property, plant and equipment, gross 18,830 18,056
Building [Member]    
Property, plant and equipment, gross 12,728 10,860
Office Equipment [Member]    
Property, plant and equipment, gross 2,878 2,810
Leasehold Improvements [Member]    
Property, plant and equipment, gross 894 894
Construction in Progress [Member]    
Property, plant and equipment, gross 225 1,986
Land [Member]    
Property, plant and equipment, gross 3,509 4,257
Water Rights [Member]    
Property, plant and equipment, gross 200 200
Property, plant and equipment, gross 160,999 153,787
Less accumulated depreciation (88,964) (80,312)
Total property and equipment, net $ 72,035 $ 73,475