Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating activities
Net income	$ 35,394	$ 94,678
Adjustments to reconcile net income to cash used in operating activities:
Depreciation and amortization	57,365	44,307
Bad debt expense	802	198
Equity in earnings of affiliates, net of dividends	(3,868)	8,643
Gain on sale of investments in affiliates	0	(17,055)
Gains on sales of Rail Group assets and related leases	(12,438)	(14,666)
Excess tax benefit from share-based payment arrangement	(1,299)	(1,770)
Deferred income taxes	18,921	9,441
Stock-based compensation expense	2,598	7,542
Goodwill impairment expense	1,985	0
Other	1,061	(446)
Changes in operating assets and liabilities:
Accounts receivable	(6,003)	10,161
Inventories	292,960	218,460
Commodity derivatives	16,160	127,655
Other assets	(1,465)	11,755
Trade and other payables	(344,400)	(396,629)
Net cash provided by operating activities	57,773	102,274
Investing Activities
Acquisition of business, net of cash acquired	(124,592)	0
Purchases of Rail Group assets	(112,346)	(39,294)
Proceeds from sale of Rail Group assets	64,978	30,894
Purchases of property, plant and equipment	(42,387)	(39,624)
Proceeds from sale of property, plant and equipment	184	1,043
Proceeds from returns of investments in affiliates	1,480	35,920
Cash distributions to noncontrolling interests	0	(1,494)
Investments in affiliates	0	(238)
Change in restricted cash	248	235
Net cash used in investing activities	(212,435)	(12,558)
Financing Activities
Net change in short-term borrowings	79,700	0
Proceeds from issuance of long-term debt	152,796	1,787
Payments of long-term debt	(87,032)	(64,442)
Purchase of treasury stock	(49,089)	0
Distributions to noncontrolling interest owner	(2,453)	0
Proceeds from sale of treasury shares to employees and directors	447	1,564
Payments of debt issuance costs	(271)	(3,175)
Dividends paid	(12,011)	(9,359)
Excess tax benefit from share-based payment arrangement	1,299	1,770
Other	(2,770)	0
Net cash provided by (used in) financing activities	80,616	(71,855)
Increase (decrease) in cash and cash equivalents	(74,046)	17,861
Cash and cash equivalents at beginning of period	114,704	309,085
Cash and cash equivalents at end of period	$ 40,658	$ 326,946