Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Activities
Income (loss) before income taxes from continuing operations	$ 170,700	$ 132,529	$ 154,954
Income from discontinued operations, net of income taxes	0	0	12,025
Net income	170,700	132,529	166,979
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	127,804	125,106	134,742
Bad debt expense, net	17,637	11,519	6,001
Stock-based compensation expense	13,629	12,857	11,192
Deferred federal income tax	(2,911)	(1,596)	(20,009)
Asset impairment	0	87,156	11,818
Gain on sale of business from discontinued operations	0	0	(27,091)
Damaged inventory	0	0	17,328
Other	(3,595)	(16,341)	14,073
Changes in operating assets and liabilities, net of assets acquired and liabilities assumed:
Accounts and notes receivable	35,777	468,968	(391,403)
Inventories	87,906	572,235	56,859
Commodity derivatives	15,005	111,506	65,399
Other current and non-current assets	(28,050)	6,529	10,936
Payables and other current and non-current liabilities	(102,396)	(563,718)	230,293
Net cash provided by operating activities	331,506	946,750	287,117
Investing Activities
Acquisition of businesses, net of cash acquired	(29,172)	(24,698)	(20,245)
Purchases of property, plant and equipment and capitalized software	(149,187)	(150,443)	(108,284)
Property insurance proceeds	12,137	7,499	3,999
Proceeds from sale of business	0	10,318	5,171
Proceeds from sale of Rail assets	0	2,871	36,706
Proceeds from sale of business from discontinued operations	0	0	56,302
Purchases of Rail assets	0	0	(31,458)
Other	3,148	574	4,907
Net cash used in investing activities	(163,074)	(153,879)	(52,902)
Financing Activities
Net (payments) receipts under short-term lines of credit	(91,951)	(233,696)	(21,273)
Payments of long-term debt	(83,589)	(49,620)	(30,045)
Distributions to noncontrolling interest owner	(102,295)	(46,418)	(44,910)
Dividends paid	(26,273)	(25,373)	(24,609)
Value of shares withheld for taxes	8,105	6,630	3,381
Common stock repurchased	(2,295)	(1,747)	(12,721)
Proceeds from issuance of long-term debt	67,000	100,000	0
Payments of debt issuance costs	(2,851)	0	0
Proceeds from issuance of short-term debt	0	0	350,000
Payments of short-term debt	0	0	(550,000)
Other	0	(509)	2,209
Net cash used in financing activities	(250,359)	(263,993)	(334,730)
Effect of exchange rates on cash and cash equivalents	(156)	(293)	(660)
Increase (decrease) in Cash and cash equivalents	(82,083)	528,585	(101,175)
Cash and cash equivalents at beginning of year	643,854	115,269	216,444
Cash and cash equivalents at end of year	$ 561,771	$ 643,854	$ 115,269