Debt - $110.0 million Credit Agreement (Details)			9 Months Ended
	Aug. 21, 2015 USD ($)	May. 14, 2014 USD ($)	Sep. 27, 2015 USD ($)	Aug. 19, 2015 USD ($)	May. 31, 2015 USD ($)
Herley
Line of Credit Facility [Line Items]
Disposition decrease to collateral assets	$ 37,900,000
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
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
Herley disposition proceeds reinvestment reserve, as defined in the amendment | 2014 Credit Agreement, Third Amendment | Minimum
Line of Credit Facility [Line Items]
Covenant Terms, percentage of reinvestment in excess of loans and credit					0.00%
Herley disposition proceeds reinvestment reserve, as defined in the amendment | 2014 Credit Agreement, Third Amendment | Maximum
Line of Credit Facility [Line Items]
Covenant Terms, percentage of reinvestment in excess of loans and credit					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 | 2014 Credit Agreement, Third Amendment | Minimum
Line of Credit Facility [Line Items]
Covenant Terms, percentage of reinvestment in excess of loans and credit					15.00%
Fixed charge coverage ratio of at least 1.10 | 2014 Credit Agreement, Third Amendment | Maximum
Line of Credit Facility [Line Items]
Covenant Terms, percentage of reinvestment in excess of loans and credit					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
Revolving Loans
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 110,000,000.0	$ 72,100,000.0
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			$ 62,400,000
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)			0.50%
Revolving Loans | LIBOR rate
Line of Credit Facility [Line Items]
Base rate (floor, 1.0% over one-month LIBOR)			1.00%
Revolving Loans | Base rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.50%
Revolving Loans | Base rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate			2.00%
Revolving Loans | Eurodollar rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate			2.50%
Revolving Loans | Eurodollar rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate			3.00%
Revolving Loans | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Fixed charge coverage ratio		1.15
Revolving Loans | 2014 Credit Agreement, Third Amendment | Minimum | Herley
Line of Credit Facility [Line Items]
Minimum amount required for repurchase					$ 175,000,000
Revolving Loans | Fixed charge coverage ratio not measured | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, capacity of outstanding loans or credit					0
Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 50,000,000.0
Outstanding borrowings			$ 8,500,000
Letter of Credit | Fixed charge coverage ratio not measured | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, capacity of outstanding loans or credit					17,000,000
Swingline Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 10,000,000.0
Swingline Loan | Fixed charge coverage ratio not measured | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, capacity of outstanding loans or credit					0
Revolving Loans plus outstanding Swingline Loans plus Letters of Credit | Fixed charge coverage ratio of at least 1.05 | 2014 Credit Agreement, Third Amendment
Line of Credit Facility [Line Items]
Covenant Terms, capacity of outstanding loans or credit					$ 17,000,000