Annual report pursuant to Section 13 and 15(d)

Derivative Liabilities - Additional Information (Detail)

v3.20.2
Derivative Liabilities - Additional Information (Detail) - USD ($)
3 Months Ended 12 Months Ended
Jun. 05, 2019
Mar. 31, 2013
Jun. 30, 2020
Jun. 30, 2019
Jun. 28, 2019
Derivative [Line Items]          
Derivative liabilities under the fair value hierarchy     $ 0 $ 0  
Derivative liabilities balance     0 0  
Agent warrants, value     $ 2,180 $ 2,180  
Agent warrants issued to purchase of common stock     2,180 2,180  
2019 Investor Warrants [Member]          
Derivative [Line Items]          
Number of warrants exercised 760,500        
Purchase price $ 3.10        
Warrants expiration date Jun. 05, 2024        
Derivative liabilities under the fair value hierarchy         $ 492,884
2013 Investor Warrants [Member]          
Derivative [Line Items]          
Number of warrants exercised   328,125      
Purchase price   $ 32.00      
Gross proceeds from exercise of warrants   $ 10,500,000      
Reverse acquisition, description   Each unit consisted of one share of common stock and one five-year warrant (the “2013 Investor Warrants”) to purchase one share of common stock at an initial exercise price of $32.00.      
2015 Agent Warrants [Member]          
Derivative [Line Items]          
Number of warrants exercised     2,180    
Warrants expiration date     Jul. 15, 2020    
Derivative liabilities under the fair value hierarchy     $ 29,594    
Warrants exercise price     $ 30.00