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Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 29, 2015
Dec. 30, 2014
Dec. 31, 2013
Reconciliation unrecognized tax benefits      
Beginning balance $ 2,795 $ 3,977 $ 4,607
Lapse of applicable statute of limitations (108) 0 (743)
Additional interest / penalties accrued (2) 143 113
Adjustments to prior year positions 0 (1,325) 0
Ending balance $ 2,685 $ 2,795 $ 3,977