Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:
Manufacturing (including revenues from affiliates of $91,135 and $132,370 for the three and six months ended June 30, 2014, respectively, and $19,904 and $82,982 for the same periods in 2013)	$ 206,364	$ 132,242	$ 360,327	$ 305,217
Railcar Leasing	13,885	7,527	25,631	14,070
Railcar Services (including revenues from affiliates of $4,699 and $8,662 for the three and six months ended June 30, 2014, respectively, and $4,546 and $9,154 for the same periods in 2013)	17,260	19,635	33,666	35,227
Total revenues	237,509	159,404	419,624	354,514
Cost of revenues:
Manufacturing	(160,033)	(97,709)	(278,398)	(234,832)
Railcar Leasing	(5,382)	(3,301)	(9,873)	(6,205)
Railcar Services	(13,424)	(14,860)	(26,789)	(27,449)
Total cost of revenues	(178,839)	(115,870)	(315,060)	(268,486)
Gross profit	58,670	43,534	104,564	86,028
Selling, general and administrative	(6,820)	(3,665)	(16,207)	(14,930)
Earnings from operations	51,850	39,869	88,357	71,098
Interest income (including income from related parties of $613 and $1,240 for the three and six months ended June 30, 2014, respectively, and $676 and $1,357 for the same periods in 2013)	619	679	1,260	1,370
Interest expense	(1,843)	(1,341)	(3,515)	(4,341)
Loss on debt extinguishment	0	0	(1,896)	(392)
Other income	27	12	32	2,008
Earnings (Loss) from joint ventures	335	(804)	(266)	(1,777)
Earnings before income taxes	50,988	38,415	83,972	67,966
Income tax expense	(18,772)	(14,796)	(30,986)	(26,410)
Net earnings	$ 32,216	$ 23,619	$ 52,986	$ 41,556
Net earnings per common share—basic and diluted (in dollars per share)	$ 1.51	$ 1.11	$ 2.48	$ 1.95
Weighted average common shares outstanding—basic and diluted (in shares)	21,352	21,352	21,352	21,352
Cash dividends declared per common share (in dollars per share)	$ 0.40	$ 0.25	$ 0.80	$ 0.50