Debt - $110.0 Million Credit Agreement (Details)		12 Months Ended
	May. 14, 2014 USD ($)	Dec. 27, 2015 USD ($)	Aug. 21, 2015 USD ($)	Aug. 19, 2015 USD ($)	May. 31, 2015 USD ($)	Dec. 28, 2014
2014 Credit Agreement, Third Amendment | Herley
Line of Credit Facility [Line Items]
Reserve amount based on collateral carrying value		$ 4,900,000			$ 50,800,000
2014 Credit Agreement, Third Amendment | Fixed charge coverage ratio of at least 1.05
Line of Credit Facility [Line Items]
Fixed charge coverage ratio					1.05
2014 Credit Agreement, Third Amendment | Fixed charge coverage ratio of at least 1.10
Line of Credit Facility [Line Items]
Fixed charge coverage ratio					1.10
2014 Credit Agreement, Third Amendment | Fixed charge coverage ratio remains at 1.15
Line of Credit Facility [Line Items]
Fixed charge coverage ratio					1.15
2014 Credit Agreement, Fourth Amendment
Line of Credit Facility [Line Items]
Letter of credit exposure outstanding				$ 17,000,000.0
Minimum | 2014 Credit Agreement, Third Amendment | Herley disposition proceeds reinvestment reserve, as defined in the amendment
Line of Credit Facility [Line Items]
Covenant terms, percentage of reinvestment in excess of loans and credit					0.00%
Minimum | 2014 Credit Agreement, Third Amendment | Fixed charge coverage ratio of at least 1.10
Line of Credit Facility [Line Items]
Covenant terms, percentage of reinvestment in excess of loans and credit					15.00%
Maximum | 2014 Credit Agreement, Third Amendment | Herley disposition proceeds reinvestment reserve, as defined in the amendment
Line of Credit Facility [Line Items]
Covenant terms, percentage of reinvestment in excess of loans and credit					15.00%
Maximum | 2014 Credit Agreement, Third Amendment | Fixed charge coverage ratio of at least 1.10
Line of Credit Facility [Line Items]
Covenant terms, percentage of reinvestment in excess of loans and credit					25.00%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 110,000,000.0	105,100,000.0			$ 110,000,000.0
Maturity period (in years)	5 years
Potential maximum borrowing capacity, subject to Lender approval	$ 135,000,000.0
Fixed charge coverage ratio						1.15
Outstanding borrowings		0	$ 41,000,000
Remaining borrowing capacity		$ 60,100,000
Revolving Credit Facility | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Fixed charge coverage ratio					1.15
Revolving Credit Facility | 2014 Credit Agreement, Third Amendment | Fixed charge coverage ratio not measured
Line of Credit Facility [Line Items]
Covenant terms, capacity of outstanding loans of credit					$ 0
Revolving Credit Facility | Minimum | 2014 Credit Agreement, Third Amendment | Herley
Line of Credit Facility [Line Items]
Minimum amount required to repurchase					175,000,000
Revolving Credit Facility | Maximum | Herley
Line of Credit Facility [Line Items]
Period from sale allowed to reinvest in similar collateral assets		360 days
Revolving Credit Facility | Federal Funds Rate
Line of Credit Facility [Line Items]
Base rate (the greater of prime rate or 0.5% over federal funds rate)		0.50%
Revolving Credit Facility | LIBOR Rate
Line of Credit Facility [Line Items]
Base rate (floor, 1.0% over one-month LIBOR)		1.00%
Revolving Credit Facility | Base Rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.50%
Revolving Credit Facility | Base Rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate		2.00%
Revolving Credit Facility | Eurodollar Rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate		2.50%
Revolving Credit Facility | Eurodollar Rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate		3.00%
Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	50,000,000.0
Outstanding borrowings		$ 11,100,000
Letter of Credit | 2014 Credit Agreement, Third Amendment | Fixed charge coverage ratio not measured
Line of Credit Facility [Line Items]
Covenant terms, capacity of outstanding loans of credit					17,000,000.0
Swing Line Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 10,000,000.0
Revolving Loans plus outstanding Swingline Loans plus Letters of Credit | 2014 Credit Agreement, Third Amendment | Fixed charge coverage ratio of at least 1.05
Line of Credit Facility [Line Items]
Covenant terms, capacity of outstanding loans of credit					$ 17,000,000.0