CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Sales	$ 4,030,327	$ 4,500,538
Cost of sales	3,808,263	4,294,300
Gross profit	222,064	206,238
Costs and operating 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 before income tax expense	29,431	31,662
Income tax expense	(400)	(1,177)
Net income	29,031	30,485
Less: General partner's interest in net income, including incentive distribution rights	1,782	1,177
Preferred Limited Partners
Costs and operating expenses:
Limited partners' interest in net income	3,463	3,463
Common Limited Partners
Costs and operating expenses:
Limited partners' interest in net income	$ 23,786	$ 25,845
Basic net income per common limited partner unit	$ 0.70	$ 0.76
Diluted net income per common limited partner unit	$ 0.70	$ 0.76
Basic weighted average common limited partner units outstanding	33,986	33,953
Diluted weighted average common limited partner units outstanding	34,001	34,085