Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Intangible Assets [Line Items]
Impairment charge	$ 0	$ 1,000,000
Minimum [Member] | IPR&D [Member]
Schedule Of Intangible Assets [Line Items]
Estimated Useful Lives	15 years
Maximum [Member] | IPR&D [Member]
Schedule Of Intangible Assets [Line Items]
Estimated Useful Lives	18 years
Research and Development [Member]
Schedule Of Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 46,813	$ 147,500