Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities:
Net earnings	$ 22,183	$ 21,467
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	30,573	28,174
Amortization of deferred costs	251	250
Gain on disposal of property, plant, equipment and leased railcars	(267)	(12)
Asset Impairment Charges	3,554	0
Earnings from joint ventures	(1,878)	(1,346)
Provision for deferred income taxes	7,365	26,720
Items related to investing activities:
Available-for-sale Securities, Gross Realized Gains	0	(1,823)
Changes in operating assets and liabilities:
Accounts receivable, net	9,188	(393)
Accounts receivable, due from related parties	388	2,357
Income taxes receivable	957	(12,248)
Inventories, net	(26,703)	4,264
Prepaid expenses and other current assets	(503)	235
Accounts payable	6,281	(4,983)
Accounts payable, due to related parties	(41)	(3,065)
Accrued expenses and taxes	707	(8,401)
Other	(688)	956
Net cash provided by operating activities	51,367	52,152
Investing activities:
Purchases of property, plant and equipment	(4,542)	(3,422)
Capital expenditures - leased railcars	(19,269)	(103,765)
Proceeds from the disposal of property, plant, and equipment and leased railcars	1,157	73
Proceeds from Sale of Available-for-sale Securities	0	4,086
Proceeds from repayments of loans by joint ventures	2,953	2,953
Net cash used in investing activities	(19,701)	(100,075)
Financing activities:
Repayments of debt	(12,762)	(12,669)
Payment of common stock dividends	(15,267)	(15,267)
Net cash used in financing activities	(28,029)	(27,936)
Effect of exchange rate changes on cash	(150)	69
Net increase (decrease) in cash, cash equivalents, and restricted cash	3,487	(75,790)
Cash, cash equivalents, and restricted cash at beginning of period	116,884	195,285
Cash, cash equivalents, and restricted cash at end of period	$ 120,371	$ 119,495