Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating activities
Net income (loss)	$ 17,557	$ (27,135)
Adjustments to reconcile net income (loss) to cash used in operating activities:
Depreciation and amortization	67,960	64,546
Bad debt expense (recovery)	(436)	1,076
Equity in (earnings) losses of affiliates, net of dividends	(18,390)	(2,168)
Gains on sale of Rail Group assets and related leases	(5,911)	(7,642)
Gain on sale of assets	(4,181)	(11,443)
Stock-based compensation expense	4,898	4,550
Goodwill impairment	0	42,000
Asset impairment	6,272	0
Other	(2,626)	(610)
Changes in operating assets and liabilities:
Accounts receivable	(20,853)	(334)
Inventories	156,375	200,667
Commodity derivatives	18,080	16,073
Other assets	127	10,422
Payables and other accrued expenses	(190,042)	(229,268)
Net cash provided by (used in) operating activities	28,830	60,734
Investing Activities
Acquisition of business, net of cash acquired	0	(3,507)
Purchases of Rail Group assets	(108,054)	(77,513)
Proceeds from sale of Rail Group assets	47,644	18,368
Purchases of property, plant and equipment and capitalized software	(86,694)	(26,705)
Proceeds from sale of assets	42,307	26,601
Proceeds from returns of investments in affiliates	0	1,339
Purchase of investments	(11,086)	(4,929)
Other	0	1,470
Net cash provided by (used in) investing activities	(115,883)	(64,876)
Financing Activities
Net change in short-term borrowings	110,000	(11,059)
Proceeds from issuance of long-term debt	57,000	35,175
Proceeds from long-term financing arrangement	0	12,195
Payments of long-term debt	(112,995)	(54,326)
Proceeds from noncontrolling interest owner	31,115	0
Proceeds from sale of treasury shares to employees and directors	0	450
Payments of debt issuance costs	(1,446)	(2,024)
Dividends paid	(13,976)	(13,485)
Other	(744)	(936)
Net cash provided by (used in) financing activities	68,954	(34,010)
Decrease in cash and cash equivalents	(18,099)	(38,152)
Cash and cash equivalents at beginning of period	34,919	62,630
Cash and cash equivalents at end of period	$ 16,820	$ 24,478