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Note 12 Stock-Based Compensation
 3 Months Ended
Jan. 01, 2022
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Share-based Payment Arrangement [Text Block] Stock-Based Compensation
Stock-based compensation expense was recognized as follows:
Three Months Ended
January 1,
2022		January 2,
2021
(In thousands)
Cost of sales$3,783 $3,421 
Selling, general and administrative5,135 4,717 
Research and development114 70 
  Total$9,032 $8,208 

As of January 1, 2022, an aggregate of 6.5 million shares were authorized for future issuance under the Company's stock plans, of which 3.6 million of such shares were issuable upon exercise of outstanding options and delivery of shares upon vesting of restricted stock units and 2.9 million shares of common stock were available for future grant.

Restricted and Performance Stock Units

The Company grants restricted stock units and restricted stock units with performance conditions ("PSUs") to executive officers, directors and certain other employees. These units vest over periods ranging from one year to four years and/or upon achievement of specified performance criteria, with associated compensation expense recognized ratably over the vesting period.

The Company also grants shares for which vesting is contingent on cumulative non-GAAP earnings per share measured over three fiscal years. If a minimum threshold is not achieved during the measurement period, the shares will be cancelled. If a minimum threshold is achieved or exceeded, the number of shares of common stock that will be issued will range from 80% to 120% of the number of PSUs granted, depending on the extent of performance. Additionally, the number of shares that vest may be adjusted up or down by up to 15% based on the Company's total shareholder return relative to that of its peer group over this same period.
    
Activity with respect to the Company's restricted stock units and PSUs was as follows:
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 2, 20212,954 32.21 1.23113,591 
Granted689 39.37 
Vested/Forfeited/Cancelled(688)28.35 
Outstanding as of January 1, 20222,955 34.78 1.60113,881 
Expected to vest as of January 1, 20222,522 34.65 1.5297,195 
As of January 1, 2022, unrecognized compensation expense of $64 million is expected to be recognized over a weighted average period of 1.6 years.