Long-Term Debt (Details) - USD ($)	Dec. 21, 2016	Jun. 30, 2015	Oct. 15, 2012	Dec. 27, 2016
Debt Instrument [Line Items]
Revolving credit facility-maximum borrowing capacity			$ 25,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility, amount outstanding				$ 0
Borrowings available under revolving credit facility				28,800,000
Revolving Credit Facility [Member] | Three-year Unsecured [Member]
Debt Instrument [Line Items]
Revolving credit facility-maximum borrowing capacity			$ 25,000
Credit facility maturity term			3 years
Percentage of commitment fee paid on unused revolving loan facility			0.25%
Revolving Credit Facility [Member] | Second Amendment [Member]
Debt Instrument [Line Items]
Credit facility maturity date		Oct. 15, 2017
Revolving credit facility - current borrowing capacity		$ 15,000,000
Incremental increases in credit facility		5,000,000
Revolving credit facility-maximum borrowing capacity		$ 30,000,000
Revolving Credit Facility [Member] | Third Amendment [Member]
Debt Instrument [Line Items]
Revolving credit facility - current borrowing capacity	$ 10,000,000
Incremental increases in credit facility	5,000,000
Revolving credit facility-maximum borrowing capacity	$ 30,000,000
Revolving Credit Facility [Member] | LIBOR [Member] | Three-year Unsecured [Member]
Debt Instrument [Line Items]
Basis spread on variable rate			1.50%
Letters Of Credit [Member]
Debt Instrument [Line Items]
Outstanding letters of credit				$ 1,200,000