Balance Sheet Information Schedule of Other Long-Term Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 29, 2015
Dec. 28, 2014
Liabilities, Noncurrent [Abstract]    
Employee compensation and benefits $ 10,346 $ 9,506
Long-term rent liability and deferred rent allowances 8,189 8,431
Liability for uncertain tax positions 2,089 2,064
Accrued financial instrument contracts (see note 10) 14,124 6,280
Other 7,456 8,024
Total $ 42,204 $ 34,305