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Property and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Property and equipment      
Property and equipment, gross $ 333,549 $ 293,379  
Less-Accumulated depreciation (189,600) (164,825)  
Property and equipment, net 143,949 128,554  
Depreciation expense 33,600 28,400 $ 27,900
Land      
Property and equipment      
Property and equipment, gross 6,792 6,792  
Transportation equipment      
Property and equipment      
Property and equipment, gross $ 153,587 132,792  
Transportation equipment | Minimum      
Property and equipment      
Estimated useful life 1 year    
Transportation equipment | Maximum      
Property and equipment      
Estimated useful life 7 years    
Machinery and equipment      
Property and equipment      
Property and equipment, gross $ 56,357 48,000  
Machinery and equipment | Minimum      
Property and equipment      
Estimated useful life 1 year    
Machinery and equipment | Maximum      
Property and equipment      
Estimated useful life 20 years    
Computer and telephone equipment      
Property and equipment      
Property and equipment, gross $ 23,551 23,065  
Computer and telephone equipment | Minimum      
Property and equipment      
Estimated useful life 1 year    
Computer and telephone equipment | Maximum      
Property and equipment      
Estimated useful life 10 years    
Buildings and leasehold improvements      
Property and equipment      
Property and equipment, gross $ 80,275 74,981  
Buildings and leasehold improvements | Minimum      
Property and equipment      
Estimated useful life 1 year    
Buildings and leasehold improvements | Maximum      
Property and equipment      
Estimated useful life 40 years    
Furniture and fixtures      
Property and equipment      
Property and equipment, gross $ 6,270 6,081  
Furniture and fixtures | Minimum      
Property and equipment      
Estimated useful life 1 year    
Furniture and fixtures | Maximum      
Property and equipment      
Estimated useful life 17 years    
Construction in progress      
Property and equipment      
Property and equipment, gross $ 6,717 $ 1,668