Equity - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net (loss) income	$ (7,649)	$ 13,615	$ (7,460)	$ 20,568
Denominator
Weighted average number of shares outstanding - basic (in shares)	37,425	36,768	37,197	33,069
Effect of dilutive securities
Weighted average number of shares outstanding - diluted (in shares)	37,425	38,893	37,197	34,777
Earnings per share - basic (in dollars per share)	$ (0.20)	$ 0.37	$ (0.20)	$ 0.62
Earnings per share - diluted (in dollars per share)	$ (0.20)	$ 0.35	$ (0.20)	$ 0.59
Weighted average antidilutive options, unvested restricted RSUs and RSAs, unvested PSUs and ESPP shares excluded from the computation (in shares)	3,163	2,138	1,315	1,947
Stock options
Effect of dilutive securities
Dilutive options outstanding, unvested stock units and unvested stock awards (in shares)	0	10	0	5
PSUs, RSUs, and restricted stock
Effect of dilutive securities
Dilutive options outstanding, unvested stock units and unvested stock awards (in shares)	0	2,115	0	1,703