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Common Stock - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Jan. 01, 2020
Mar. 31, 2019
Mar. 31, 2019
Mar. 31, 2019
Mar. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Withholding tax adjustment       $ 784,724  
2019 Employee Stock Purchase Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Percentage of earnings for purchase of common stock   15.00% 15.00% 15.00%  
Offering periods   12 months      
Employee stock purchase plan, description   The initial offering period will run from March 28, 2019 through June 30, 2020.      
Common stock reserved for issuance   6,000,000 6,000,000 6,000,000  
Common stock purchased        
2019 Employee Stock Purchase Plan | Scenario, Forecast          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Common stock reserved for issuance 7,000,000        
Percentage of common stock outstanding 1.00%        
Restricted Stock Units          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Withholding tax adjustment, shares     7,798,045    
Withholding tax adjustment     $ 561,200    
Aggregate grant-date fair value, weighted average period     2 years    
Issuance of common stock upon settlement of RSUs, shares     17,688,423    
Aggregate unrecognized compensation cost   $ 1,300,000 $ 1,300,000 $ 1,300,000  
Restricted Stock Units | Certain Officers,Employees and Consultants          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of shares granted     15,065,349    
Aggregate grant-date fair value, net of forfeitures     $ 834,300    
Aggregate grant-date fair value, weighted average period     2 years    
Common Stock          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Issuance of common stock upon exercise of stock options, shares     3,162,797 7,121,000 335,000
Stock issued value during the period     $ 205,600    
Withholding tax adjustment, shares     3,617,460 11,415,000  
Withholding tax adjustment     $ 235,100    
Issuance of common stock upon settlement of RSUs, shares       17,688,000