Quarterly report pursuant to Section 13 or 15(d)

Nature of business and summary of significant accounting policies - Allowance for Doubtful Accounts (Details)

v3.20.2
Nature of business and summary of significant accounting policies - Allowance for Doubtful Accounts (Details) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Accounting Policies [Abstract]    
Allowance for doubtful accounts (less than) $ 0.1 $ 0.1