Business, Basis of Presentation and Summary of Significant Accounting Policies, Goodwill, Other Accrued Expenses, and Warranty (Details) (USD $)	12 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 24, 2012
Goodwill [Line Items]
Total goodwill	$ 52,149,000	$ 52,149,000
Goodwill deductible for income tax purposes	8,300,000
Goodwill deducted for income tax purposes	300,000	300,000	300,000
Changes in warranty reserve [Roll Forward]
Accrued warranty, beginning of period	1,992,000	2,190,000	3,457,000
Accruals for warranties issued during the year	2,495,000	2,019,000	3,722,000
Changes in estimates related to pre-existing warranties	(184,000)	144,000	(1,135,000)
Warranty claim settlements	(2,685,000)	(2,361,000)	(3,854,000)
Accrued warranty, end of period	1,618,000	1,992,000	2,190,000
Energy-Saving Products [Member]
Goodwill [Line Items]
Total goodwill	33,190,000	33,190,000
HiRel [Member]
Goodwill [Line Items]
Total goodwill	$ 18,959,000	$ 18,959,000