Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating activities:
Net earnings	$ 76,810	$ 62,526
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	24,423	20,433
Amortization of deferred costs	363	486
(Gain) loss on disposal of property, plant, equipment and leased railcars	(72)	75
Loss from joint ventures	263	2,282
Provision for deferred income taxes	11,182	23,997
Provision for allowance for doubtful accounts receivable	(905)	(14)
Items related to investing activities:
Realized and unrealized gains on short-term investments - available for sale securities	0	(141)
Items related to financing activities:
Loss on debt extinguishment	(1,896)	(392)
Changes in operating assets and liabilities:
Accounts receivable, net	(7,987)	5,329
Accounts receivable, due from related parties	(8,764)	(9,315)
Inventories, net	(15,235)	7,994
Prepaid expenses and other current assets	(1,734)	(30)
Accounts payable	20,634	(6,927)
Accounts payable, due to related parties	1,538	(1,345)
Accrued expenses and taxes	4,432	16,483
Other	3,007	(4,224)
Net cash provided by operating activities	111,661	118,029
Investing activities:
Purchases of property, plant and equipment	(13,701)	(15,343)
Capital expenditures - leased railcars	(187,861)	(108,314)
Proceeds from Sale of Property, Plant, and Equipment	575	2
Proceeds from the sale of short-term investments - available for sale securities	0	12,699
Proceeds from repayments of loans by joint ventures	2,875	2,100
Investments in and loans to joint ventures	0	(136)
Net cash used in investing activities	(198,112)	(108,992)
Financing activities:
Repayments of long-term debt	(201,833)	(178,424)
Proceeds from long-term debt	318,682	99,841
Increase (Decrease) in Restricted Cash	(26)	(3,965)
Payment of common stock dividends	(25,623)	(16,014)
Debt issuance costs	(2,425)	(432)
Net cash provided by (used in) financing activities	88,775	(98,994)
Effect of exchange rate changes on cash and cash equivalents	(123)	(68)
Increase (Decrease) in cash and cash equivalents	2,201	(90,025)
Cash and cash equivalents at beginning of period	97,252	205,045
Cash and cash equivalents at end of period	$ 99,453	$ 115,020