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Note 2 New Accounting Pronouncement (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 29, 2018
Sep. 29, 2018
Sep. 30, 2017
Oct. 01, 2016
Accounting Standard Update [Line Items]        
Goodwill impairment   $ 30,610 $ 0 $ 0
Goodwill $ 28,516 28,516 $ 59,126 $ 59,126
Accounting Standards Update 2017-04 [Member]        
Accounting Standard Update [Line Items]        
Goodwill impairment 30,610      
Accounting Standards Update 2016-09 [Member]        
Accounting Standard Update [Line Items]        
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets $ 43,000 43,000    
Minimum | Accounting Standards Update 2014-09 [Member]        
Accounting Standard Update [Line Items]        
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification   10,000    
Maximum | Accounting Standards Update 2014-09 [Member]        
Accounting Standard Update [Line Items]        
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification   $ 40,000