Net Loss Per Share - Net (Loss) Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator:
Net loss used in calculating net loss per share, basic	$ (25,016)	$ (15,142)
Denominator:
Weighted average shares of common stock outstanding used in computing net (loss) income per share, basic (in shares)	19,776	18,080
Dilutive effect of incremental shares and share equivalents:
Weighted average shares of common stock outstanding used in computing net (loss) income per share, diluted (in shares)	19,776	18,080
Net loss per share:
Net (loss) income per share, basic (USD per share)	$ (1.26)	$ (0.84)
Net (loss) income per share, diluted (USD per share)	$ (1.26)	$ (0.84)
Convertible notes
Dilutive effect of incremental shares and share equivalents:
Dilutive effect of share-based payment arrangements (in shares)	0	0
Options
Dilutive effect of incremental shares and share equivalents:
Dilutive effect of share-based payment arrangements (in shares)	0	0
RSUs
Dilutive effect of incremental shares and share equivalents:
Dilutive effect of share-based payment arrangements (in shares)	0	0
PSUs
Dilutive effect of incremental shares and share equivalents:
Dilutive effect of share-based payment arrangements (in shares)	0	0
ESPP
Dilutive effect of incremental shares and share equivalents:
Dilutive effect of share-based payment arrangements (in shares)	0	0