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Commitments and Contingencies (Changes in Asset Retirement Obligations) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Beginning asset retirement obligation $ 8,925 $ 8,306
Liabilities incurred during the period 509 1,587
Revisions in estimated retirement obligations 0 2
Liabilities settled during the period (534) (860)
Accretion expense 308 364
Currency translation (314) (474)
Ending asset retirement obligations $ 8,894 $ 8,925