Summary of Significant Accounting Policies - Concentrations (Details)	1 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Nov. 30, 2015	Nov. 30, 2014
Segment Reporting Information [Line Items]
Percentage of employees under collective bargaining agreements		15.00%
U.S. Government and agencies [Member]
Segment Reporting Information [Line Items]
Percentage of Net Sales	85.00%	91.00%		90.00%	92.00%
Net Sales [Member] | US Government, Terminal High Altitude Area Defense Program [Member]
Segment Reporting Information [Line Items]
Risk percentage	13.00%	13.00%		13.00%	12.00%
Net Sales [Member] | US Government, Standard Missile Program [Member]
Segment Reporting Information [Line Items]
Risk percentage	12.00%	12.00%		14.00%	12.00%
Net Sales [Member] | Lockheed Martin Corp [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Risk percentage	24.00%	27.00%		29.00%	28.00%
Net Sales [Member] | Raytheon Company [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Risk percentage	19.00%	20.00%		20.00%	17.00%
Net Sales [Member] | ULA [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Risk percentage	28.00%	21.00%		19.00%	25.00%
Net Sales [Member] | NASA [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Risk percentage	10.00%	13.00%		11.00%	11.00%
Accounts Receivable [Member] | Lockheed Martin Corp [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Risk percentage		17.00%	16.00%
Accounts Receivable [Member] | Raytheon Company [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Risk percentage		17.00%	19.00%
Accounts Receivable [Member] | ULA [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Risk percentage		20.00%	14.00%
Accounts Receivable [Member] | NASA [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Risk percentage		14.00%
Accounts Receivable [Member] | Boeing [Member] | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Risk percentage		13.00%	24.00%