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Fabrication Contracts (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Fabrication Contracts
Costs and estimated earnings in excess of billings on uncompleted contracts	$ 159,098	$ 122,214
Billings on uncompleted contracts in excess of costs and estimated earnings	(164,251)	(83,961)
Total Cost and Estimated Earnings Versus Billings	$ (5,153)	$ 38,253

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- Definition

Represents costs incurred and estimated earnings on uncompleted contracts after billings.

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- Definition

Liability attributable to (i) billings in excess of costs under the percentage of completion contract accounting method representing the difference between contractually invoiced amounts (billings) and revenue recognized based, for example, on costs incurred to estimated total costs at period end or (ii) contractually invoiced amounts (billings) in excess of costs incurred and accumulated under the completed contract accounting method.

+ References

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- Definition

Total amount included in cost of uncompleted contracts in excess of related billings, or unbilled accounts receivable.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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