Preferred Stock - Additional Information (Detail) - USD ($)			12 Months Ended
	Jul. 11, 2018	Aug. 16, 2017	Dec. 31, 2018	Dec. 31, 2019	Jun. 30, 2018
Temporary Equity [Line Items]
Deemed dividend			$ 56,792
Redeemable convertible preferred shares outstanding			0	0
Common Stock [Member]
Temporary Equity [Line Items]
Conversion of Series B redeemable convertible preferred stock into common stock, shares			502,078
Second Warrants Exchange [Member]
Temporary Equity [Line Items]
Stock issued for exchange of warrants, shares	22,523
Number of shares issued	32,124
Series B Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Convertible preferred shares, shares issued		15,656
Convertible preferred shares, par value		$ 0.0001
Stock issued for exchange of warrants		$ 14,716,370
Issuance costs incurred		$ 1,697,800
Redeemable preferred stock redemption date		Aug. 16, 2018
Percentage of common stock in reserve for issue on conversion		150.00%
Conversion of redeemable preferred stock into common stock, shares			9,813
Series B Redeemable Convertible Preferred Stock [Member] | Level 3 [Member]
Temporary Equity [Line Items]
Beneficial conversion feature		$ 1,506,196	$ 1,338,840
Series B Preferred Stock [Member]
Temporary Equity [Line Items]
Face value of preferred stock					$ 2,364,044
Face value of preferred stock, shares					2,364
Series B Preferred Stock [Member] | Second Warrants Exchange [Member]
Temporary Equity [Line Items]
Number of shares issued	32,124
Proceeds from issuance of warrants	$ 22,241
Deemed contribution			$ 111,553
Maximum [Member] | Series B Redeemable Convertible Preferred Stock [Member]
Temporary Equity [Line Items]
Stock issued for exchange of warrants, shares		78,181