Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands	Jul. 03, 2011
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Money market instruments	$ 2,452
Treasury bills	0
Municipal bonds	0
Corporate bonds	0
Agency bonds	0
Sovereign bonds	0
Covered bonds	0
Currency forward contracts	209
Liabilities:
Currency forward contracts	13
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Money market instruments	0
Treasury bills	25,215
Municipal bonds	118,703
Corporate bonds	105,744
Agency bonds	38,416
Sovereign bonds	21,531
Covered bonds	6,715
Currency forward contracts	0
Liabilities:
Currency forward contracts	$ 0