Shareholders' Equity (Details)
Dec. 31, 2017
shares
Dec. 31, 2016
shares
Sep. 18, 2014
Class of Stock [Line Items]      
Common stock, shares issued (in shares) 11,120,528 10,894,924  
Common stock, shares authorized (in shares) 100,000,000 100,000,000  
Preferred stock, shares authorized (in shares) 10,000,000 10,000,000  
Preferred stock, shares issued (in shares) 0 0  
Preferred stock, shares outstanding (in shares) 0 0  
Vectrus, Inc.      
Class of Stock [Line Items]      
Common stock, distribution basis for issued and outstanding shares     0.0556
Former parent      
Class of Stock [Line Items]      
Common stock, shares issued (in shares) 10,474,268    
2014 Omnibus Plan      
Class of Stock [Line Items]      
Maximum number of shares of Company's common stock authorized for issuance (in shares) 2,600,000    
Shares available (in shares) 1,300,000