XML 55 R42.htm IDEA: XBRL DOCUMENT v3.21.2
Stockholders' Equity - Employee Stock Purchase Plans (Details)
$ in Millions
 9 Months Ended
Jul. 03, 2021
shares
Oct. 02, 2021
USD ($)
Plan
period
shares
Jul. 02, 2021
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of employee stock purchase plans | Plan   2  
Recognition period   2 years 2 months 12 days  
Unrecognized stock-based compensation expense, stock options | $   $ 27.6  
2017 Nonqualified Employee Stock Purchase Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of additional shares authorized (in shares) 800,000    
Number of shares authorized (in shares)   5,500,000  
Shares available for future grant (in shares)   2,900,000  
Shares purchased under ESPP (in shares)   200,000  
Recognition period   10 months 24 days  
Maximum contribution percent (up to 25%)   25.00%  
Employee termination period following purchase date to receive shares subject to risk of forfeiture   1 year  
Number of offering periods | period   2  
Offering period   6 months  
Number of shares authorized per purchase period (in shares)   500,000  
Unrecognized stock-based compensation expense, stock options | $   $ 4.8  
Employee Stock Purchase Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
ESPP, maximum employee payroll deduction percentage   15.00%  
ESPP, maximum number of shares per employee (in shares)   2,000  
Offering period   6 months  
ESPP, discounted purchase price percentage   85.00%  
Number of additional shares authorized (in shares) 1,300,000    
Number of shares authorized (in shares) 11,100,000   9,800,000
Shares available for future grant (in shares)   3,600,000  
Shares purchased under ESPP (in shares)   300,000  
Unrecognized stock-based compensation expense | $   $ 1.1  
Recognition period   4 months 24 days  
Offering period   6 months