Warranty (Details) (USD $)	3 Months Ended		9 Months Ended
	Mar. 27, 2015	Mar. 28, 2014	Mar. 27, 2015	Mar. 28, 2014
Activity in warranty reserve [Abstract]
Reserve balance, beginning of period	$ 5,952,000	$ 5,800,000	$ 5,968,000	$ 5,701,000
Current period expense	582,000	399,000	1,812,000	1,541,000
Payments or credits to customers	(453,000)	(498,000)	(1,482,000)	(1,646,000)
Translation	(185,000)	11,000	(402,000)	116,000
Reserve balance, end of period	5,896,000	5,712,000	5,896,000	5,712,000
Current portion of warranty accrual	3,904,000	3,766,000	3,904,000	3,766,000
Long-term portion of warranty accrual	$ 1,992,000	$ 1,946,000	$ 1,992,000	$ 1,946,000