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Property and Equipment
3 Months Ended
Mar. 31, 2012
Property and Equipment [Abstract]  
Property and Equipment
 
4.
Property and Equipment

Property and equipment are summarized as follows (in thousands):

March 31,
2012
December 31,
2011
Construction equipment
$121,702$125,222
Transportation equipment
16,15817,963
Buildings
7,2604,729
Office equipment
1,3051,077
Construction in progress
4842,544
Land
4,1863,026
Water rights
200200
151,295154,761
Less accumulated depreciation
(68,615) (71,332 )
$82,680$83,429

Construction in progress at March 31, 2012 consisted primarily of expenditures for a new office in San Antonio, Texas. In addition to the expenditures for the new office in San Antonio, construction in progress at December 31, 2011 consisted primarily of expenditures for a new office in Dallas, Texas which was completed during the three months ended March 31, 2012.