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Stockholders' Equity And Stock-Based Compensation (Tables)
 6 Months Ended
Mar. 31, 2023
Stockholders' Equity And Stock-Based Compensation [Abstract]  
Summary Of Stock Options Issued To Officers, Directors, And Employees Under 2000 Stock Incentive Plan And 2005 Stock Plan
The following table summarizes information about PSOs granted to our executive officers that have vested during the periods presented:
Grant DateAggregate Shares Granted at Target Award
Aggregate Shares Exercisable at Vest Date (1)
Percentage Vested of Target AwardVested Date
December 15, 2018241,100 158,700 75 %December 2021
(1)Aggregate shares exercisable at vest date does not include any shares that were cancelled before the vest date after they were granted.
The following table summarizes information about stock options, including PSOs, issued under our 2020 Stock Plan:
SharesWeighted-Average
Exercise Price		Weighted-Average
Remaining
Contractual Life
Aggregate
Intrinsic
Value (1)
 (in thousands) (in years)(in thousands)
Options outstanding at September 30, 20224,059 $62.59 
Grants326 71.07 
Exercises(325)42.52 
Options outstanding at March 31, 20234,060 64.92 5.61$86,066 
Options vested and expected to vest at March 31, 20233,896 64.64 5.5285,167 
Options exercisable at March 31, 20233,059 $60.74 4.7177,350 
(1)Aggregate intrinsic value is based on the closing stock price of our Class A common stock on March 31, 2023 of $85.42 and excludes the impact of options that were not in-the-money.
Summary Of Restricted Stock Units Issued To Officers, Directors And Employees Under 2005 Stock Incentive Plan The following table summarizes information about RSUs, including PSUs, issued under our 2020 Stock Plan:
SharesWeighted-Average
Grant Date
Fair Value 
 (in thousands)
Non-vested at September 30, 20223,502 $83.09 
Granted1,591 68.93 
Vested(1,103)78.22 
Forfeitures(106)79.95 
Non-vested at March 31, 20233,884 $78.76 
Schedule Of Fair Value Of Stock-Based Awards Estimated Using Weighted-Average Assumptions The weighted-average assumptions used in the determination of the fair value of our stock options were as follows:
 Fiscal Year-To-Date Ended
 March 31,
2023		April 1,
2022
Expected term (in years)4.824.78
Risk-free interest rate3.6 %1.2 %
Expected stock price volatility29.4 %28.6 %
Dividend yield1.6 %1.1 %
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
The following two tables separately present stock-based compensation expense both by award type and classification in our unaudited interim condensed consolidated statements of operations (in thousands):
Expense - By Award Type
 Fiscal Quarter EndedFiscal Year-To-Date Ended
 March 31,
2023		April 1,
2022		March 31,
2023		April 1,
2022
Compensation expense
Stock options$2,008 $2,313 $4,413 $5,618 
Restricted stock units (1) (2)
26,544 23,686 54,096 51,406 
Employee stock purchase plan1,275 1,700 2,558 3,331 
Total stock-based compensation expense29,827 27,699 61,067 60,355 
Estimated benefit from income taxes(4,497)(4,412)(9,199)(9,531)
Total stock-based compensation, net of tax$25,330 $23,287 $51,868 $50,824 
(1)Stock-based compensation expense incurred by restricted stock units includes expense from PSUs.
(2)Excludes $0.3 million in second quarter of fiscal 2023 and $0.7 million in the fiscal year-to-date period ended March 31, 2023 of capitalized stock-based compensation related to internal-use software.
Expense - By Income Statement Line Item Classification
 Fiscal Quarter EndedFiscal Year-To-Date Ended
 March 31,
2023		April 1,
2022		March 31,
2023		April 1,
2022
Compensation expense
Cost of products and services$431 $402 $934 $992 
Research and development9,472 9,155 20,148 19,257 
Sales and marketing10,276 9,791 21,003 22,039 
General and administrative9,648 8,351 18,982 18,067 
Total stock-based compensation expense29,827 27,699 61,067 60,355 
Estimated benefit from income taxes(4,497)(4,412)(9,199)(9,531)
Total stock-based compensation, net of tax$25,330 $23,287 $51,868 $50,824 
Schedule of Stock Repurchase Authorizations The following table summarizes the initial amount of authorized repurchases as well as additional repurchases approved by our Board of Directors as of March 31, 2023 (in thousands):
Date of AuthorizationAuthorization Amount
Fiscal 2010: November 2009$250,000 
Fiscal 2010: July 2010300,000 
Fiscal 2011: July 2011250,000 
Fiscal 2012: February 2012100,000 
Fiscal 2015: October 2014200,000 
Fiscal 2017: January 2017200,000 
Fiscal 2018: July 2018350,000 
Fiscal 2019: July 2019350,000 
Fiscal 2021: July 2021350,000 
Fiscal 2022: February 2022250,000 
Fiscal 2022: August 2022350,000 
Total$2,950,000 
Schedule of Stock Repurchase Activity
The following table provides information regarding share repurchase activity under the program during fiscal 2023:
Quarterly Repurchase ActivityShares
Repurchased
Cost (1)
Average Price Paid Per Share (2)
(in thousands)
Q1 - Quarter ended December 30, 2022680,861 $49,412 $72.57 
Q2 - Quarter ended March 31, 2023631,046 49,864 79.02 
Total1,311,907 $99,276 
(1)Cost of share repurchases includes the price paid per share, and excludes commission costs.
(2)Average price paid per share excludes commission costs.
Dividends Declared
The following table summarizes dividends declared under the program during fiscal 2023:
Fiscal PeriodAnnouncement DateRecord DatePayment DateCash Dividend Per Common ShareDividend Payment
Q1 - Quarter ended December 30, 2022February 2, 2023February 14, 2023February 22, 2023$0.27 $25.9 million
Q2 - Quarter ended March 31, 2023May 4, 2023May 16, 2023May 23, 2023$0.27 $25.9 million
(1)
(1)The dividend payment amount for the dividend declared in the second quarter of fiscal 2023 is estimated based on the number of shares of our Class A and Class B common stock that we estimate will be outstanding as of the Record Date.