Balance Sheet Account Details (Details 5) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2014	Jun. 29, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Dec. 30, 2012
Accrued Liabilities, Current [Abstract]
Accrued compensation expenses	$ 95,041		$ 82,705
Deferred revenue, current portion	72,391		50,834
Acquisition related contingent liability, current portion	46,522		6,719
Accrued taxes payable	36,035		30,435
Customer deposits	14,822		13,569
Reserve for product warranties	14,433	13,000	10,407	11,317	10,826	10,136
Facility exit obligation, current portion	4,337		5,570
Other	20,552		18,881
Total accrued liabilities	$ 304,133		$ 219,120