Transactions with Former Parent - Additional Information (Details) (Exelis, Former Parent, USD $)
3 Months Ended
Mar. 29, 2014
Mar. 27, 2015
Dec. 31, 2014
Related Party Transaction [Line Items]      
General corporate expenses incurred by related party allocated to Company $ 7,800,000    
Payables due to related party   1,000,000 1,400,000
Receivables due from related party   100,000  
Master Transition Service Agreement
     
Related Party Transaction [Line Items]      
Charges incurred due to services provided by related party   1,000,000  
Revenue incurred due to services provided to related party   $ 0