Debt - $110.0 million Credit Agreement (Details)			6 Months Ended
	Aug. 21, 2015 USD ($)	May 14, 2014 USD ($)	Jun. 26, 2016 USD ($)	Aug. 19, 2015 USD ($)	May 31, 2015 USD ($)
Herley
Line of Credit Facility [Line Items]
Reserve on the maximum borrowings	$ 0
2014 Credit Agreement, Third Amendment | Herley
Line of Credit Facility [Line Items]
Reserve amount based on collateral carrying value	50,800,000
2014 Credit Agreement, Fourth Amendment
Line of Credit Facility [Line Items]
Letter of credit exposure outstanding				$ 17,000,000
Revolving Loans
Line of Credit Facility [Line Items]
Maximum borrowing capacity	110,000,000.0	$ 110,000,000.0	$ 110,000,000.0
Maturity period		5 years
Potential maximum borrowing capacity, subject to Lender approval		$ 135,000,000.0
Fixed charge coverage ratio		1.15
Outstanding borrowings	$ 41,000,000		0
Remaining borrowing capacity			$ 48,400,000
Revolving Loans | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Fixed charge coverage ratio		1.15
Revolving Loans | Minimum | 2014 Credit Agreement, Third Amendment | Herley
Line of Credit Facility [Line Items]
Minimum amount required for repurchase					$ 175,000,000
Revolving Loans | Maximum | Herley
Line of Credit Facility [Line Items]
Period from sale allowed to reinvest in similar collateral assets			360 days
Revolving Loans | Federal Funds Rate
Line of Credit Facility [Line Items]
Base rate (the greater of prime rate or 0.5% over federal funds rate) (in percent)			0.50%
Revolving Loans | LIBOR rate
Line of Credit Facility [Line Items]
Base rate (floor, 1.0% over one-month LIBOR) (in percent)			1.00%
Revolving Loans | Base Rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate (percent)			1.50%
Revolving Loans | Base Rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate (percent)			2.00%
Revolving Loans | Eurodollar | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate (percent)			2.50%
Revolving Loans | Eurodollar | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate (percent)			3.00%
Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 50,000,000.0
Outstanding borrowings			$ 13,000,000
Swingline Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 10,000,000.0
Fixed charge coverage ratio not measured | Revolving Loans | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, capacity of outstanding loans or credit					0
Fixed charge coverage ratio not measured | Letter of Credit | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, capacity of outstanding loans or credit					17,000,000
Fixed charge coverage ratio not measured | Swingline Loan | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, capacity of outstanding loans or credit					$ 0
Fixed charge coverage ratio of at least 1.05 | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Fixed charge coverage ratio					1.05
Fixed charge coverage ratio of at least 1.05 | Revolving Loans plus outstanding Swingline Loans plus Letters of Credit | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, capacity of outstanding loans or credit					$ 17,000,000
Herley disposition proceeds reinvestment reserve, as defined in the amendment | Minimum | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, percentage of reinvestment in excess of loans and credit (percent)					0.00%
Herley disposition proceeds reinvestment reserve, as defined in the amendment | Maximum | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, percentage of reinvestment in excess of loans and credit (percent)					15.00%
Fixed charge coverage ratio of at least 1.10 | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Fixed charge coverage ratio					1.10
Fixed charge coverage ratio of at least 1.10 | Minimum | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, percentage of reinvestment in excess of loans and credit (percent)					15.00%
Fixed charge coverage ratio of at least 1.10 | Maximum | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, percentage of reinvestment in excess of loans and credit (percent)					25.00%
Fixed charge coverage ratio remains at 1.15 | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Fixed charge coverage ratio					1.15