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Property and Equipment
 9 Months Ended
Sep. 30, 2023
Property, Plant and Equipment [Abstract]  
Property and Equipment
6.PROPERTY AND EQUIPMENT
Property and equipment are summarized as follows:
September 30,
2023		December 31,
2022
Construction and transportation equipment$383,869 $345,647 
Buildings and improvements21,220 20,500 
Land3,402 3,402 
Office equipment3,623 3,352 
Total property and equipment412,114 372,901 
Less accumulated depreciation(181,056)(157,419)
Total property and equipment, net$231,058 $215,482 
Depreciation Expense—Depreciation expense is primarily included within cost of revenues and was $11,121 and $31,320 for the three and nine months ended September 30, 2023, respectively, and $9,219 and $26,731 for the three and nine months ended September 30, 2022, respectively.