Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating losses	$ 18,978,410	$ 13,493,760
Accrued expenses	495,301	208,604
Amortization	785,523	947,115
Stock compensation	584,507	622,789
Lease liability	502,151	479,940
Other	106,197	117,713
Valuation allowance	(18,671,086)	(13,149,779)
Total deferred tax assets	2,781,003	2,720,142
Deferred tax liabilities:
IPR&D assets	(2,386,667)	(2,373,304)
Right of use asset	(248,710)	(192,160)
Depreciation	(145,626)	(154,678)
Total deferred tax liabilities	$ (2,781,003)	$ (2,720,142)