Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities
Net (loss) income	$ (15,622)	$ 3,945
Adjustments to reconcile net income to cash used in operating activities:
Depreciation and amortization	20,902	17,523
Bad debt expense	424	188
Equity in earnings of affiliates, net of dividends	7,033	1,404
Gain on sale of investments	(685)	0
Gains on sales of Rail Group assets and related leases	(2,443)	(4,522)
Excess tax benefit from share-based payment arrangement	0	(224)
Deferred income taxes	(988)	(3,446)
Stock-based compensation expense	1,473	736
Other	(20)	890
Changes in operating assets and liabilities:
Accounts receivable	(37,474)	(28,366)
Inventories	43,947	51,698
Commodity derivatives	(15,630)	(3,696)
Other assets	1,526	(4,042)
Trade and other payables	(270,296)	(318,747)
Net cash used in operating activities	(267,853)	(286,659)
Investing Activities
Purchases of Rail Group assets	(7,340)	(23,455)
Proceeds from sale of Rail Group assets	4,967	12,851
Purchases of property, plant and equipment	(12,305)	(6,742)
Proceeds from sale of property, plant and equipment	206	80
Proceeds from sale of investments	15,013	0
Investments in affiliates	(22)	0
Change in restricted cash	(269)	(256)
Net cash provided by (used in) investing activities	250	(17,522)
Financing Activities
Net change in short-term borrowings	258,000	308,500
Proceeds from issuance of long-term debt	76,908	30,799
Payments of long-term debt	(80,399)	(63,466)
Purchase of treasury stock	0	(27,783)
Proceeds from sale of treasury shares to employees and directors	1,275	403
Payments of debt issuance costs	(299)	(107)
Dividends paid	(4,338)	(4,059)
Excess tax benefit from share-based payment arrangement	0	224
Other	(993)	(573)
Net cash provided by financing activities	250,154	243,938
Decrease in cash and cash equivalents	(17,449)	(60,243)
Cash and cash equivalents at beginning of period	63,750	114,704
Cash and cash equivalents at end of period	$ 46,301	$ 54,461