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Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2020
Mar. 31, 2020
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Income Tax Contingency [Line Items]            
Severance costs   $ 0.7        
Amortization of debt issuance costs         $ 0.1  
Advertising expense     $ 0.1 $ 0.1 $ 0.3 $ 0.2
Texas            
Income Tax Contingency [Line Items]            
Sale and use tax refund $ 1.1