Operating Segment and Sales and Credit Concentrations (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting Information [Line Items]

Segment reporting information

The information in the following table is derived from the segments’ internal financial reports used by the Company’s management for purposes of assessing segment performance and for making decisions about allocation of resources.

	Three Months Ended March 31, 2016
	Revenues
	External		Intersegment			Total			Earnings (Loss) from Operations
	(in thousands)
Manufacturing	$	123,792	$	23,631		$	147,423		$	22,686
Railcar leasing	32,768		—			32,768			19,675
Railcar services	19,620		959			20,579			3,508
Corporate	—		—			—			(4,508		)
Eliminations	—		(24,590		)	(24,590		)	(664		)
Total Consolidated	$	176,180	$	—		$	176,180		$	40,697
	Three Months Ended March 31, 2015
	Revenues
	External		Intersegment			Total			Earnings (Loss) from Operations
	(in thousands)
Manufacturing	$	221,811	$	83,731		$	305,542		$	70,438
Railcar leasing	24,585		—			24,585			14,764
Railcar services	17,380		102			17,482			2,867
Corporate	—		—			—			(4,350		)
Eliminations	—		(83,833		)	(83,833		)	(23,704		)
Total Consolidated	$	263,776	$	—		$	263,776		$	60,015

Total Assets	March 31, 2016			December 31, 2015
	(in thousands)
Manufacturing	$	245,117		$	272,721
Railcar leasing	1,211,790			1,190,180
Railcar services	58,565			56,880
Corporate/Eliminations	(91,956		)	5,293
Total Consolidated	$	1,423,516		$	1,525,074

Schedule of sales to related parties

Below is a summary of revenue from affiliates for each operating segment reflected as a percentage of total consolidated revenues.

	Three Months Ended   March 31,
	2016		2015
Manufacturing	0.3	%	45.9	%
Railcar leasing	—	%	—	%
Railcar services	4.5	%	2.4	%

Sales Revenue, Segment [Member]

Segment Reporting Information [Line Items]

Schedules of sales and credit concentration

	Three Months Ended   March 31,
	2016		2015
Manufacturing revenues from significant customers	50.0	%	62.2	%

Accounts Receivable [Member]

Segment Reporting Information [Line Items]

Schedules of sales and credit concentration

	March 31, 2016		December 31, 2015
Manufacturing receivables from significant customers	45.0	%	20.9	%