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Stockholders' Equity (Deficit) - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Nov. 26, 2019
Dec. 31, 2019
Dec. 31, 2019
Class Of Stock [Line Items]      
Number of stock options granted   1,192,000 2,738,740
Weighted average exercise price of stock option granted   $ 17.37 $ 15.12
Expected term of stock options granted     6 years 3 months
Expected volatility of option granted     50.00%
Risk-free interest rate, minimum     1.59%
Risk-free interest rate, maximum     1.88%
Expected dividend yield     0.00%
Unamortized stock-based compensation cost   $ 29.8 $ 29.8
Weighted-average period over which unrecognized compensation cost is expected to be recognized     3 years 3 months
Class of warrant exercise price   $ 4.50 $ 4.50
Class of warrant exercisable period     5 years
Warrants issued or issuable     0
Maximum      
Class Of Stock [Line Items]      
Issuance of warrants   5,600,000 5,600,000
2019 Employee Stock Purchase Plan      
Class Of Stock [Line Items]      
Number of shares of common stock reserved for issuance 1,400,000    
Potential percentage of additional number of shares reserved for issuance each year 1.00%    
Percentage of employee compensation, maximum 15.00%    
Fair value of option granted percentage 85.00%    
2019 Employee Stock Purchase Plan | Maximum      
Class Of Stock [Line Items]      
Total number of shares issued 14,000,000