Equity - Schedule of (Loss) Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Numerator
Net (loss) income	$ (24,333)	$ 25,643
Denominator
Weighted average number of shares outstanding - basic (in shares)	37,269	34,020
Effect of dilutive securities
Weighted average number of shares outstanding - diluted (in shares)	37,269	35,789
Earnings per share - basic (in dollars per share)	$ (0.65)	$ 0.75
Earnings per share - diluted (in dollars per share)	$ (0.65)	$ 0.72
Weighted average antidilutive options, unvested restricted stock units and awards, unvested performance stock units and ESPP shares excluded from the computation (in shares)	858	195
Employee stock options
Effect of dilutive securities
Dilutive options outstanding, unvested stock units and unvested stock awards (in shares)	0	7
PSUs, RSUs, and restricted stock
Effect of dilutive securities
Dilutive options outstanding, unvested stock units and unvested stock awards (in shares)	0	1,762