Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.19.2
Stockholders' Equity - Additional Information (Detail)
1 Months Ended 3 Months Ended
Aug. 17, 2018
USD ($)
Mar. 31, 2019
USD ($)
$ / shares
shares
Jan. 31, 2018
USD ($)
Mar. 31, 2019
USD ($)
$ / shares
shares
Jun. 30, 2019
Vote
Class of Stock [Line Items]          
Number of common stock voting entitlement per share | Vote         1
Issuance of shares and warrants in private placements, net of issuance costs   $ 23,319,156   $ 23,319,156  
Net of issuance costs from offering of shares   $ 1,680,844      
Class of warrant or right, number of securities called by warrants or rights | shares   1,666,666   1,666,666  
Class of warrant or right, exercise price of warrants or rights | $ / shares   $ 10.00   $ 10.00  
Consummation of Offering Under Shelf Registration [Member]          
Class of Stock [Line Items]          
Stock issued during period, value, new issues     $ 38,846,815    
Underwriter's discount and issuance costs     $ 1,153,715    
Proceeds from shelf registration debt or equity securities $ 75,000,000