Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.20.2
Stockholders' Equity - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 23, 2020
Apr. 30, 2020
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Class Of Stock [Line Items]              
Recognized compensation expense of stock options     $ 6,800 $ 7,800      
Remaining unrecognized compensation cost     11,400   $ 11,400    
Aggregate intrinsic value of outstanding common stock options     $ 0   0   $ 0
Proceeds from warrants exercised         $ 2,946,480 $ 22,320  
Number of warrants, exercised         1,227,700 9,300  
Cash received for shares issued   $ 1.0          
Share Exchange Agreement [Member]              
Class Of Stock [Line Items]              
Common stock issued 520,833            
Denominator for conversion of convertible note to restricted common shares $ 2.40            
Cash received for shares issued $ 250,000            
Maxim Holdings LLC [Member]              
Class Of Stock [Line Items]              
Recognized compensation expense of stock options         $ 125,450    
Common stock sold 186,000            
Stock Warrants [Member]              
Class Of Stock [Line Items]              
Proceeds from warrants exercised         $ 2,946,480    
Number of warrants, exercised         1,227,700