XML 64 R50.htm IDEA: XBRL DOCUMENT v3.10.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Foreign Operations And Related Derivative Financial Instruments) (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 28, 2018
Sep. 29, 2017
Sep. 30, 2016
Foreign Currencies [Line Items]      
Currency gains from transactions $ 1,985 $ 903  
Currency losses from transactions     $ 277
Percent of revenues in foreign currency 16.00%    
Euro      
Foreign Currencies [Line Items]      
Percent of revenues in foreign currency 7.00%    
Canadian Dollars      
Foreign Currencies [Line Items]      
Percent of revenues in foreign currency 6.00%    
Various other foreign currencies      
Foreign Currencies [Line Items]      
Percent of revenues in foreign currency 3.00%