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Summary of Significant Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Inventory
Raw materials	$ 153,229	$ 128,606
Work-in-progress	40,550	26,762
Finished goods	49,097	54,425
Total inventory	$ 242,876	$ 209,793
Goodwill
Long-term growth rate used to calculate terminal values for each reporting unit (as a percent)	3.00%

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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