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Property and Equipment
 3 Months Ended
Mar. 31, 2023
Property, Plant and Equipment [Abstract]  
Property and Equipment
6.PROPERTY AND EQUIPMENT
Property and equipment are summarized as follows:
March 31,
2023		December 31,
2022
Construction and transportation equipment$353,038 $345,647 
Buildings and improvements20,763 20,500 
Land3,402 3,402 
Office equipment3,513 3,352 
Total property and equipment380,716 372,901 
Less accumulated depreciation(165,499)(157,419)
Total property and equipment, net$215,217 $215,482 
Depreciation Expense—Depreciation expense is primarily included within cost of revenues and was $9,956 and $7,795 for the three months ended March 31, 2023 and 2022, respectively.