Debt - Additional Information (Details) (USD $)	0 Months Ended	3 Months Ended	0 Months Ended	12 Months Ended
	Sep. 26, 2014	Mar. 27, 2015	Sep. 17, 2014	Mar. 27, 2016	Dec. 31, 2015	Apr. 01, 2016	Sep. 25, 2015
Debt Instrument [Line Items]
Distribution to subsidiary of Exelis	$ 136,300,000
Maximum allowed dividend distribution		5,000,000
Senior Secured Credit Facilities
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity			215,000,000
Covenant terms, ratio of total indebtedness to consolidated EBITDA		3.50
Covenant terms, ratio of consolidated EBITDA to combined interest expense		4.50
Ratio of total indebtedness to consolidated EBITDA		3.02
Ratio of combined EBITDA to consolidated interest expense		7.15
Interest rate		2.93%
Debt Instrument, percentage of interest in event of default in excess of applicable rate		2.00%
Senior Secured Credit Facilities | Minimum
Debt Instrument [Line Items]
Undrawn portion of revolving facility, commitment fee percentage		0.40%
Senior Secured Credit Facilities | Maximum
Debt Instrument [Line Items]
Undrawn portion of revolving facility, commitment fee percentage		0.50%
Senior Secured Credit Facilities | London Interbank Offered Rate (LIBOR) | Minimum
Debt Instrument [Line Items]
Spread on variable rate		2.50%
Senior Secured Credit Facilities | London Interbank Offered Rate (LIBOR) | Maximum
Debt Instrument [Line Items]
Spread on variable rate		3.00%
Term Loan
Debt Instrument [Line Items]
Face amount of term loan facility			140,000,000
Facility, maturity			5 years
Long-term Debt		137,400,000
Term facility, amortization rate, year one			7.50%
Term Facility, amortization rate, year two			10.00%
Term facility, amortization rate, year three			10.00%
Term facility, amortization rate, year four			15.00%
Term facility, amortization rate, year five			57.50%
Term facility, mandatory prepayment terms, percentage of net cash proceeds from incurrence of indebtedness		100.00%
Term facility, mandatory prepayment terms, percentage of net cash proceeds of all non-ordinary course asset sales or other dispositions of property		100.00%
Revolver
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity			75,000,000
Facility, maturity			5 years
Available borrowing capacity		60,700,000
Letters of Credit
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity			35,000,000
Number of letters of credit outstanding		6
Letters of credit outstanding		14,300,000
Swingline Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity			10,000,000
Scenario, Forecast | Senior Secured Credit Facilities
Debt Instrument [Line Items]
Covenant terms, ratio of total indebtedness to consolidated EBITDA						2.75	3.00
Scenario, Forecast | Term Loan
Debt Instrument [Line Items]
Estimated repayment of debt				5,000,000
Term facility, mandatory prepayment terms, percentage of borrower's excess cash flow					50.00%
Term facility, mandatory prepayment terms, percentage of borrower's excess cash flow, stepdown to 25%					25.00%
Term facility, mandatory prepayment terms, percentage of borrower's excess cash flow, stepdown to 0%					0.00%
Long-term debt issuance costs, net
Debt Instrument [Line Items]
Debt financing fees			$ 3,700,000