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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Sales $ 18,561,421 $ 17,163,566 $ 16,492,174
Cost of sales 17,499,368 16,105,670 15,518,534
Gross profit 1,062,053 1,057,896 973,640
Costs and operating expenses:      
Selling, general and administrative expenses 305,702 292,073 273,733
Operating expenses 519,450 515,327 450,627
Amortization expense 5,332 8,275 8,136
Net gain on sale and disposition of assets (3,326) (9,494) (2,626)
Long-lived asset impairment 231 492 0
Total costs and operating expenses 827,389 806,673 729,870
Operating income 234,664 251,223 243,770
Other income (loss) and (expense):      
Income (loss) from equity method investments 4,509 (1,514) 2,503
Interest expense (137,162) (134,773) (85,631)
Loss on early extinguishment of debt (2,971)    
Income before income tax expense 99,040 114,936 160,642
Income tax expense (1,063) (4,609) (8,136)
Net income 97,977 110,327 152,506
Less: General partner's interest in net income, including incentive distribution rights 18,759 15,344 9,908
Preferred Limited Partners      
Other income (loss) and (expense):      
Net income attributable to common limited partners 7,124 9,575 14,559
Less: Redemption of Series A preferred limited partner units   2,634  
Common Limited Partners      
Other income (loss) and (expense):      
Net income attributable to common limited partners $ 72,094 $ 82,774 $ 128,039
Basic net income per common limited partner unit $ 2.13 $ 2.45 $ 3.77
Diluted net income per common limited partner unit $ 2.11 $ 2.41 $ 3.76
Basic weighted average common limited partner units outstanding 33,871 33,840 33,970
Diluted weighted average common limited partner units outstanding 34,217 34,339 34,039