Customer Concentration (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Spirit [Member] | Revenue [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)	34.40%	34.40%	34.80%	33.70%
Spirit [Member] | Accounts Receivable [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)			26.90%		33.30%
Gulfstream [Member] | Revenue [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)	15.90%	14.30%	14.30%	15.30%
Gulfstream [Member] | Accounts Receivable [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)			15.70%		13.10%
The Boeing Company [Member] | Revenue [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)	12.60%	10.00%	11.40%	10.90%
The Boeing Company [Member] | Accounts Receivable [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)			6.20%		7.40%