Retirement Benefit Plan (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Dec. 28, 2012	Dec. 30, 2011
Net periodic benefit cost
Service cost	$ 185	$ 183	$ 354	$ 516
Interest expense	143	161	282	353
Expected return on plan assets	(47)	(45)	(93)	(93)
Amortization of actuarial losses	85	0	85	0
Loss on settlement	0	992	0	992
Gain from curtailment	0	(1,265)	0	(1,265)
Net periodic benefit cost	366	26	628	503
Japan plan
Net periodic benefit cost
Loss on settlement		1,000		1,000
Gain from curtailment		$ 1,300		$ 1,300