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Fair Value Measurements (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 01, 2016
Jul. 01, 2016
Jul. 03, 2015
Assets at fair value, Nonrecurring     $ 0
Liabilities at fair value, Nonrecurring     $ 0
Goodwill and other intangible assets impairment $ 6,197 $ 6,197  
Diving [Member]      
Goodwill and other intangible assets impairment   6,197  
Goodwill and intangible assets, carrying value $ 0 $ 0