Summary of Significant Accounting Policies - Summary of Reconciliation of Denominator Used in Calculation of Basic and Diluted Loss Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share Basic And Diluted [Abstract]
Net loss	$ (77,837)	$ (85,031)	$ (53,746)
Weighted-average common shares outstanding - basic	46,891	44,757	42,025
Weighted-average common shares outstanding - diluted	46,891	44,757	42,025
Net loss per common share, basic and diluted	$ (1.66)	$ (1.90)	$ (1.28)