Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Schedule of Valuation Assumptions Using a Black-Scholes Pricing Model (Detail)

v3.20.2
Stockholders' Equity - Schedule of Valuation Assumptions Using a Black-Scholes Pricing Model (Detail)
12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Performance stock units [Member]    
Class of Stock [Line Items]    
Dividend rate   0.00%
Minimum | Performance stock units [Member]    
Class of Stock [Line Items]    
Volatility   79.00%
Risk-free interest rate   2.56%
Term - years   1 year 8 months 1 day
Minimum | Stock options [Member]    
Class of Stock [Line Items]    
Volatility 89.00% 71.00%
Risk-free interest rate 0.32% 1.62%
Term - years 4 years 8 months 12 days 1 month 6 days
Maximum | Performance stock units [Member]    
Class of Stock [Line Items]    
Volatility   82.50%
Risk-free interest rate   2.71%
Term - years   3 years 2 months 26 days
Maximum | Stock options [Member]    
Class of Stock [Line Items]    
Volatility 102.00% 102.00%
Risk-free interest rate 1.50% 2.71%
Term - years 5 years 8 months 12 days 3 years