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Summary of Significant Accounting Policies - Reconciliation of Numerators and Denominators used in Computing Basic and Diluted Net Income Per Share (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accounting Policies [Abstract]
Net income (loss)	$ (2,774,282)	$ (641,557)	$ (3,942,168)	$ (2,386,318)
Numerator, basic and diluted net income (loss) available to stockholders	$ (2,774,282)	$ (641,557)	$ (3,942,168)	$ (2,386,318)
Shares used in computation - basic:
Weighted average common shares outstanding	9,224,318	8,466,909	9,223,264	8,466,909
Common shares outstanding for basic	9,224,318	8,466,909	9,223,264	8,466,909
Additional shares used in computation – diluted:
Common shares outstanding for basic	9,224,318	8,466,909	9,223,264	8,466,909
Shares used in computing diluted net income per share	9,224,318	8,466,909	9,223,264	8,466,909
Net (loss) per share - basic	$ (0.30)	$ (0.08)	$ (0.43)	$ (0.28)
Net (loss) per share - diluted	$ (0.30)	$ (0.08)	$ (0.43)	$ (0.28)

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