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Common Stock - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Jan. 01, 2020
Mar. 31, 2019
May 31, 2019
Mar. 31, 2019
Jun. 30, 2018
Mar. 31, 2018
Jun. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Withholding tax adjustment             $ 863,955
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%      
Offering periods   12 months          
Employee stock purchase plan, description             The initial offering period runs from March 28, 2019 through June 30, 2020.
Common stock reserved for issuance             6,000,000
Common stock purchased             0
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     1,478,224 7,798,045      
Withholding tax adjustment     $ 77,500 $ 561,200      
Aggregate grant-date fair value, weighted average period             2 years
Issuance of common stock upon settlement of RSUs, shares     3,476,272 17,688,423      
Aggregate unrecognized compensation cost             $ 1,200,000
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      
Service-based condition for majority of satisfied over a period       4 years      
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 1,005,000 335,000  
Stock issued value during the period       $ 205,600      
Withholding tax adjustment, shares       3,617,460      
Withholding tax adjustment       $ 235,100