Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities
Net income from continuing operations	$ 6,504	$ 9,755
Income (loss) from discontinued operations, net of income taxes	(554)	3,507
Net income	5,950	13,262
Adjustments to reconcile net income to cash used in operating activities:
Depreciation and amortization	34,377	47,504
Bad debt expense, net	1,255	(1,686)
Equity in (earnings) losses of affiliates, net of dividends	244	(1,794)
Gain on sales of assets, net	(81)	(2,635)
Stock-based compensation expense	1,818	1,990
Deferred federal income tax	(6,947)	(2)
Other	2,885	4,579
Changes in operating assets and liabilities:
Accounts receivable	(215,012)	(33,476)
Inventories	(136,820)	5,007
Commodity derivatives	(277,761)	(53,295)
Other current and non-current assets	(38,810)	16,740
Payables and other current and non-current liabilities	(446,096)	(441,921)
Net cash used in operating activities	(1,074,998)	(445,727)
Investing Activities
Purchases of property, plant and equipment and capitalized software	(20,722)	(16,919)
Proceeds from sale of assets	72	385
Purchases of investments	(1,333)	(2,800)
Purchases of Rail assets	(3,186)	(2,611)
Proceeds from sale of Rail assets	248	5,383
Other	0	832
Net cash used in investing activities	(24,921)	(15,730)
Financing Activities
Net receipts under short-term lines of credit	796,209	260,160
Proceeds from issuance of short-term debt	350,000	250,000
Payments of short-term debt	(200,000)	0
Proceeds from issuance of long-term debt	0	89,700
Payments of long-term debt	(7,566)	(125,884)
Contributions from noncontrolling interest owner	2,450	1,960
Distributions to noncontrolling interest owner	(9,980)	0
Payments of debt issuance costs	(7,310)	(1,225)
Dividends paid	(6,144)	(5,839)
Proceeds from exercises of stock options	5,024	0
Other	(2,926)	(1,110)
Net cash provided by financing activities	919,757	467,762
Effect of exchange rates on cash and cash equivalents	99	(35)
Increase (decrease) in cash and cash equivalents	(180,063)	6,270
Cash and cash equivalents at beginning of period	216,444	29,123
Cash and cash equivalents at end of period	$ 36,381	$ 35,393