Summary of Significant Accounting Policies - Additional Information (Detail) - $ / shares	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Summary Of Significant Accounting Policies [Line Items]
Percentage of likelihood to be realized upon ultimate settlement, description	50.00%
Warrant issued	628,403
Warrant Exercise Price	$ 0.01
Common Stock Equivalents [Member]
Summary Of Significant Accounting Policies [Line Items]
Total potentially dilutive shares	2,545,962	1,957,584
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property Plant And Equipment Useful Life	7 years
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property Plant And Equipment Useful Life	5 years