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Note 4 Derivatives (Details)
$ in Thousands
12 Months Ended
Sep. 29, 2018
USD ($)
Nov. 15, 2018
USD ($)
Sep. 30, 2017
USD ($)
Foreign Currency Forward | Derivatives Designated as Accounting Hedges:      
Derivative [Line Items]      
Derivative Notional Amount $ 116,992   $ 105,523
Number of Contracts 54   58
Maximum Length of Time Hedged 12 months    
Foreign Currency Forward | Derivatives Not Designated as Accounting Hedges:      
Derivative [Line Items]      
Derivative Notional Amount $ 356,076   $ 302,944
Number of Contracts 56   46
Maximum Remaining Maturity 2 months    
Interest Rate Swap      
Derivative [Line Items]      
Derivative Notional Amount $ 50,000    
Inception Date Jun. 03, 2019    
Maturity Date Dec. 01, 2023    
Total Interest Rate Swaps [Member] | Subsequent Event [Member] | Interest Rate Swap      
Derivative [Line Items]      
Derivative Notional Amount   $ 150,000  
Effective Interest Rate   4.50%  
Q1 FY19 Interest Rate Swaps [Member] | Subsequent Event [Member] | Interest Rate Swap      
Derivative [Line Items]      
Derivative Notional Amount   $ 100,000