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Income Taxes - Additional Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Tax Contingency    
Increase in valuation allowance for deferred tax assets $ 29.7 $ 17.3
Federal    
Income Tax Contingency    
Net operating loss carryforwards 168.4  
Operating loss carryforwards without expiration date 117.9  
Tax credit carryforward amount 15.4  
State    
Income Tax Contingency    
Net operating loss carryforwards 170.1  
Tax credit carryforward amount $ 2.6