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Segment Reporting - Reconciliation (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Reconciliation of the totals reported for the reportable segments to the applicable line items in the consolidated financial statements    
Combined gross profit $ 222,064 $ 206,238
Operating costs and expenses    
Selling, general and administrative expenses 62,256 56,281
Operating expenses 108,353 99,233
Amortization expense 2,084 2,499
Net gain loss on sale and disposition of assets (2,128) (4,911)
Total costs and operating expenses 170,565 153,102
Operating income 51,499 53,136
Interest expense (22,068) (21,474)
Income tax expense (400) (1,177)
Net income 29,031 30,485
Operating costs and expenses not allocated to operating segments    
Operating costs and expenses    
Selling, general and administrative expenses 62,256 56,281
Operating expenses 108,353 99,233
Amortization expense 2,084 2,499
Net gain loss on sale and disposition of assets (2,128) (4,911)
Total costs and operating expenses $ 170,565 $ 153,102