Major Customers and Concentrations of Credit Risk (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure of Major Customers and Concentrations of Credit Risk [Abstract]

Sales to Major Customers

Net sales to our top ten customers, including Boeing and Raytheon, represented the following percentages of total net sales:

	Years Ended December 31,
	2013		2012		2011
Boeing	18	%	17	%	19	%
Raytheon	10	%	7	%	9	%
Top ten customers	57	%	54	%	58	%

Receivables from Customers

Boeing and Raytheon represented the following percentages of total accounts receivable:

	December 31,
	2013		2012
Boeing	12	%	12	%
Raytheon	8	%	10	%