Net Loss per Share - Summary of Basic and Diluted Net loss per Share Attributable to Common Stockholders (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net loss	$ (21,212)	$ (21,965)	$ (19,638)	$ (18,676)	$ (43,177)	$ (38,314)
Dividends, Paid-in-kind	0		0		(2,259)	(8,239)
Net loss attributable to common stockholders	$ (21,212)		$ (19,638)		$ (45,436)	$ (46,553)
Denominator:
Weighted average common shares outstanding—basic and diluted (in shares)	35,437,000		26,527,000		34,592,000	23,655,000
Net loss per share attributable to common stockholders—basic and diluted	$ (0.60)		$ (0.74)		$ (1.31)	$ (1.97)