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Note 13 Stock-Based Compensation (Tables)
 6 Months Ended
Apr. 03, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
Three Months EndedSix Months Ended
April 3,
2021		March 28,
2020		April 3,
2021		March 28,
2020
(In thousands)
Stock options$— $— $— $(1,145)
Restricted stock units, including performance based awards9,224 7,783 17,432 15,834 
  Total$9,224 $7,783 $17,432 $14,689 
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Three Months EndedSix Months Ended
April 3,
2021		March 28,
2020		April 3,
2021		March 28,
2020
(In thousands)
Cost of sales$3,629 $2,582 $7,050 $5,494 
Selling, general and administrative5,479 5,127 10,196 9,052 
Research and development116 74 186 143 
  Total$9,224 $7,783 $17,432 $14,689 
Schedule of Restricted Stock Units Award Activity [Table Text Block]
Number of
Shares		Weighted-
Average Grant Date
Fair Value
($)		Weighted-
Average
Remaining
Contractual
Term
(Years)		Aggregate
Intrinsic
Value
($)
(In thousands)(In thousands)
Outstanding as of October 3, 20202,568 29.67 1.2371,571 
Granted1,444 33.92 
Vested/Forfeited/Cancelled(698)29.31 
Outstanding as of April 3, 20213,314 31.61 1.56135,998 
Expected to vest as of April 3, 20212,870 31.46 1.51117,798