Net Loss Per Share - Computation of Denominators Used in Net Loss per Share (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Basic:
Weighted average common shares outstanding - Basic	53,726,123	50,114,710	53,616,753	50,031,615
Diluted:
Weighted average common shares outstanding - Basic	53,726,123	50,114,710	53,616,753	50,031,615
Common stock equivalents	0	0	0	0
Denominator for diluted net loss per share	53,726,123	50,114,710	53,616,753	50,031,615