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PROPERTY AND EQUIPMENT
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT
8.PROPERTY AND EQUIPMENT
Property and equipment are summarized as follows:
 As of December 31,
 20232022
Construction and transportation equipment$405,242 $345,647 
Buildings and improvements21,325 20,500 
Land3,054 3,402 
Office equipment4,023 3,352 
Total property and equipment433,644 372,901 
Less accumulated depreciation(189,996)(157,419)
Total property and equipment, net$243,648 $215,482 
Depreciation Expense—Depreciation expense is primarily included within cost of revenues and was $42,177, $36,475 and $21,039 for 2023, 2022 and 2021, respectively.