Warranty (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Dec. 28, 2012	Dec. 30, 2011
Activity in warranty reserve [Abstract]
Reserve balance, beginning of period	$ 5,462,000	$ 6,583,000	$ 5,745,000	$ 6,022,000
Current period expense	1,086,000	317,000	1,967,000	1,781,000
Payments or credits to customers	(1,066,000)	(906,000)	(2,251,000)	(1,679,000)
Foreign currency translation	51,000	(111,000)	72,000	(241,000)
Reserve balance, end of period	5,533,000	5,883,000	5,533,000	5,883,000
Current portion of warranty accrual	3,812,000		3,812,000
Long-term portion of warranty accrual	$ 1,721,000		$ 1,721,000