Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - 2000 Equity Plan (Details)

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Stockholders' Equity - 2000 Equity Plan (Details) - shares
12 Months Ended
Aug. 29, 2019
Jun. 05, 2018
Mar. 31, 2020
Stock options      
Stockholders' equity      
Vesting period     4 years
Expiration term     10 years
Portion vesting one year after the issuance date (as a percent)     25.00%
Vesting period of awards after issuance date     1 year
Portion vesting on first day of each month after one year from the issuance date (as a percent)     2.083%
2000 Plan      
Stockholders' equity      
Number of shares of common stock reserved for issuance     184,900
2017 Plan      
Stockholders' equity      
Number of shares of common stock reserved for issuance 900,000   300,000
Increase in common stock available under the plan 300,000 300,000  
Number of shares available for future grant     398,993