This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Investments in and Loans to Joint Ventures (Details Textual) (USD $)	3 Months Ended		6 Months Ended						3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Axis Credit Agreement [Member]	Dec. 31, 2013 Axis Credit Agreement [Member]	Jun. 30, 2014 Ohio Castings [Member]	Jun. 30, 2014 Axis [Member]	Jun. 30, 2013 Amtek Railcar [Member]	Jun. 30, 2013 Amtek Railcar [Member]	Dec. 27, 2013 Amtek Railcar [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of interest held in joint venture							33.30%	41.90%			50.00%
Minority partner in joint venture								9.70%
Other significant partner in joint venture								48.40%
Interest rate					7.75%
Balance outstanding on loans					$ 30,900,000	$ 32,900,000
Income (Loss) from Equity Method Investments	$ 335,000	$ (804,000)	$ (266,000)	$ (1,777,000)					$ (700,000)	$ (1,000,000)