Investments in and Loans to Joint Ventures (Tables)

6 Months Ended

Jun. 30, 2014

Schedule of Equity Method Investments [Line Items]

Summary of financial information

	June 30, 2014		December 31, 2013
	(in thousands)
Carrying amount of investments in and loans to joint ventures
Ohio Castings	$	7,708	$	7,378
Axis	21,414		24,052
Total investments in and loans to joint ventures	$	29,122	$	31,430

Ohio Castings [Member]

Schedule of Equity Method Investments [Line Items]

Summary of financial information

Summary financial results for Ohio Castings, the investee company, in total, are as follows:

	Three Months Ended   June 30,					Six Months Ended   June 30,
	2014		2013			2014		2013
	(in thousands)
Results of operations
Revenues	$	22,255	$	12,794		$	36,264	$	27,282
Gross profit	$	2,788	$	515		$	2,935	$	905
Net earnings (loss)	$	1,896	$	(116	)	$	1,327	$	(349	)

Axis [Member]

Schedule of Equity Method Investments [Line Items]

Summary of financial information

Summary financial results for Axis, the investee company, in total, are as follows:

	Three Months Ended   June 30,						Six Months Ended   June 30,
	2014			2013			2014			2013
	(in thousands)
Results of operations
Revenues	$	18,225		$	12,134		$	33,076		$	23,076
Gross profit	$	1,202		$	1,302		$	1,514		$	1,459
Earnings before interest	$	951		$	1,056		$	1,023		$	981
Net loss	$	(281	)	$	(300	)	$	(1,472	)	$	(1,743	)