Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.10.0.1
Subsequent Events - Additional Information (Detail)
 1 Months Ended 6 Months Ended
Jan. 08, 2019
USD ($)
$ / shares
shares
Dec. 27, 2018
USD ($)
shares
Dec. 22, 2018
USD ($)
Installment
shares
Dec. 19, 2018
USD ($)
shares
Dec. 10, 2018
USD ($)
Dec. 11, 2018
USD ($)
$ / shares
shares
Nov. 30, 2018
USD ($)
$ / shares
shares
Jun. 15, 2018
$ / shares
shares
May 31, 2018
$ / shares
Subsequent Event [Line Items]                  
Common stock, par value | $ / shares             $ 0.001   $ 0.001
Placement Agent                  
Subsequent Event [Line Items]                  
Exercise price of warrants, per share | $ / shares               $ 0.55  
Term of warrants               5 years  
Warrants to purchase common shares, shares               133,600  
Private Equity Offering                  
Subsequent Event [Line Items]                  
Exercise price of warrants, per share | $ / shares             $ 0.75    
Warrant covering common stock shares purchased, percentage             50.00%    
Common stock sold at private equity offering             44,957,170    
Common stock, par value | $ / shares             $ 0.001    
Proceeds from private equity offering | $             $ 22,500,000    
Term of warrants             5 years    
Warrants to purchase common shares, shares             22,478,585    
Private Equity Offering | Warrants                  
Subsequent Event [Line Items]                  
Exercise price of warrants, per share | $ / shares             $ 0.75    
Warrants to purchase common shares, shares             22,478,585    
Private Equity Offering | Placement Agent                  
Subsequent Event [Line Items]                  
Exercise price of warrants, per share | $ / shares             $ 0.50    
Term of warrants             5 years    
Warrants to purchase common shares, shares             4,245,117    
Subsequent Event                  
Subsequent Event [Line Items]                  
Convertible promissory note principle amount | $ $ 3,100,000                
Subsequent Event | Convertible Note                  
Subsequent Event [Line Items]                  
Common stock sold at private equity offering 6,200,000                
Convertible note, redeemed amount | $   $ 100,000              
Common stock issuance for redemption of covertible note   255,532              
Outstanding balance of convertible note including accrued unpaid interest | $   $ 5,900,000              
Debt stated percentage 10.00%                
Effective fixed conversion price for Common stock | $ / shares $ 0.50                
Subsequent Event | Placement Agent Agreement                  
Subsequent Event [Line Items]                  
Exercise price of warrants, per share | $ / shares $ 0.50                
Acquisition fees received subject to acquisition warrants exercisable 620,000                
Acquisition fees received subject to acquisition fee tail agreement | $ $ 372,000                
Tail fee period 5 years                
Subsequent Event | Chairman of the board                  
Subsequent Event [Line Items]                  
Annual base salary | $       $ 5,000 $ 16,667        
Extended service period       Apr. 16, 2019          
Extension in expiration terms       10 years          
Previously awarded stock options       150,000          
Subsequent Event | Chief Technology Officer                  
Subsequent Event [Line Items]                  
Annual base salary | $     $ 335,000            
Annual target bonus as percentage of base salary     50.00%            
Initial signing bonus amount | $     $ 100,000            
Number of equal installment for signing bonus | Installment     2            
Initial signing bonus, installment amount | $     $ 50,000            
Frequency of installsment period     6 months            
Stock options granted     400,000            
Stock options vesting     3 years            
Subsequent Event | Michael A. Klump [Member]                  
Subsequent Event [Line Items]                  
Convertible promissory note principle amount | $ $ 500,000                
Subsequent Event | Private Equity Offering                  
Subsequent Event [Line Items]                  
Exercise price of warrants, per share | $ / shares           $ 0.50      
Warrant covering common stock shares purchased, percentage           50.00%      
Common stock sold at private equity offering           2,018,000      
Common stock, par value | $ / shares           $ 0.001      
Proceeds from private equity offering | $           $ 1,000,000      
Term of warrants           5 years      
Subsequent Event | Private Equity Offering | Convertible Note                  
Subsequent Event [Line Items]                  
Exercise price of warrants, per share | $ / shares $ 0.30                
Term of warrants 5 years                
Warrants to purchase common shares, shares 3,100,000                
Warrants exercisable 50.00%                
Subsequent Event | Private Equity Offering | Warrants                  
Subsequent Event [Line Items]                  
Exercise price of warrants, per share | $ / shares           $ 0.75      
Warrants to purchase common shares, shares           1,009,000      
Subsequent Event | Private Equity Offering | Placement Agent                  
Subsequent Event [Line Items]                  
Exercise price of warrants, per share | $ / shares           $ 0.50      
Term of warrants           5 years      
Warrants to purchase common shares, shares           201,800      
Aggregate cash fee | $           $ 100,000