Net Loss Per Share - Net (Loss) Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator:
Net loss used in calculating net loss per share, basic	$ (24,681)	$ (33,278)	$ (47,459)	$ (61,326)
Denominator:
Weighted average shares of common stock outstanding used in computing net loss per share, basic (in shares)	20,091	19,858	20,041	19,819
Dilutive effect of incremental shares and share equivalents:
Weighted average shares of common stock outstanding used in computing net loss per share, diluted (in shares)	20,091	19,858	20,041	19,819
Net loss per share:
Net loss per share, basic (in USD per share)	$ (1.23)	$ (1.68)	$ (2.37)	$ (3.09)
Net loss per share, diluted (in USD per share)	$ (1.23)	$ (1.68)	$ (2.37)	$ (3.09)
Convertible notes
Dilutive effect of incremental shares and share equivalents:
Dilutive effect of share-based payment arrangements (in shares)	0	0	0	0
Options
Dilutive effect of incremental shares and share equivalents:
Dilutive effect of share-based payment arrangements (in shares)	0	0	0	0
RSUs
Dilutive effect of incremental shares and share equivalents:
Dilutive effect of share-based payment arrangements (in shares)	0	0	0	0
PSUs
Dilutive effect of incremental shares and share equivalents:
Dilutive effect of share-based payment arrangements (in shares)	0	0	0	0
ESPP
Dilutive effect of incremental shares and share equivalents:
Dilutive effect of share-based payment arrangements (in shares)	0	0	0	0