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Inventories (Schedule of Inventories) (Details) - USD ($)
$ in Thousands
Dec. 30, 2016
Sep. 30, 2016
Jan. 01, 2016
Inventories [Abstract]      
Raw materials $ 33,170 $ 26,379 $ 35,496
Work in process 307 34 203
Finished goods 42,560 41,984 58,199
Inventories $ 76,037 $ 68,397 $ 93,898