Investments in and Loans to Joint Ventures (Details Textual) (USD $)	12 Months Ended					12 Months Ended					0 Months Ended	1 Months Ended		12 Months Ended
	Dec. 31, 2013 joint_venture	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Axis Credit Agreement [Member]	Dec. 31, 2012 Axis Credit Agreement [Member]	Dec. 31, 2013 Axis Credit Agreement [Member] Minimum [Member]	Dec. 31, 2011 Ohio Castings [Member]	Dec. 31, 2010 Ohio Castings [Member]	Dec. 31, 2013 Ohio Castings [Member]	Dec. 31, 2013 Axis [Member]	Dec. 27, 2013 Amtek Railcar [Member]	Sep. 30, 2012 Amtek Railcar [Member]	Mar. 31, 2010 Amtek Railcar [Member]	Dec. 31, 2013 Amtek Railcar [Member]	Dec. 31, 2012 Amtek Railcar [Member]	Dec. 31, 2013 Prime Rate [Member] Axis Credit Agreement [Member]	Dec. 31, 2013 LIBOR [Member] Axis Credit Agreement [Member]
Investments in and Loans to Joint Ventures (Textual) [Abstract]
Number of joint ventures	2
Percentage of interest held in joint venture									33.30%	41.90%	50.00%
Sales price of subsidiaries											$ 2,300,000
Contributions made	136,000	1,856,000	5,711,000				2,100,000	600,000				1,100,000	9,800,000
Minority Partnership In Joint Venture										9.70%
Other Significant Partnership In Joint Venture										48.40%
Interest rate						7.75%
Interest rate margin on loan																2.50%	4.75%
Balance outstanding on loans				32,900,000	35,700,000
Equity Method Investment, Realized Gain (Loss) on Disposal											(5,900,000)
Income (Loss) from Equity Method Investments	(8,595,000)	(451,000)	(7,900,000)											(2,800,000)	(1,000,000)
Equity Method Investment Summarized Financial Information Profit Loss Before Interest and Taxes														$ (8,700,000)