Significant Concentration of Risk	12 Months Ended
Significant Concentration of Risk	Dec. 31, 2014
Risks and Uncertainties [Abstract]
Significant Concentration Risk	Significant Concentrations of Risk Economic Dependence The Company's largest customer (Boeing) accounted for approximately 83%, 84% and 84% of the revenues for the periods ended December 31, 2014, 2013 and 2012, respectively. Approximately 32% and 27% of the Company's accounts receivable balance at December 31, 2014 and December 31, 2013, respectively, was attributable to Boeing. The Company's second largest customer (Airbus) accounted for approximately 10%, 10% and 9% of the revenues for the periods ended December 31, 2014, 2013 and 2012, respectively. Approximately 26% and 28% of the Company's accounts receivable balance at December 31, 2014 and December 31, 2013, respectively, was attributable to Airbus. Approximately 28% and 29% of the Company's accounts receivable balance at December 31, 2014 and December 31, 2013, respectively, was attributable to Gulfstream. Employees As of December 31, 2014, we had 13,496 employees and 174 contract labor personnel, located in the Company's six U.S. facilities. Approximately 87% of the Company's U.S. employees are represented by five unions. As of December 31, 2014, we had 902 employees and 81 contract labor personnel located in the Company's two U.K. facilities. Approximately 93%, of the Company's U.K. employees are represented by one union.

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

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