Equity - Schedule of (Loss) Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Numerator
Net loss from continuing operations	$ (49,413)	$ (40,761)
(Loss) income from discontinued operations including loss on disposal of $9.6 million, net of tax benefit of $0	(25,946)	16,428
Income from discontinued operations on disposal before income tax	9,600	9,600
Income from discontinued operations on disposal	0	0
Net loss	$ (75,359)	$ (24,333)
Denominator
Weighted-average number of basic shares and preferred warrants outstanding (in shares)	51,510	37,269
Effect of dilutive securities
Weighted-average number of diluted shares and preferred warrants outstanding (in shares)	51,510	37,269
Loss on continuing operations per share - basic (in dollars per share)	$ (0.96)	$ (1.09)
Loss on continuing operations per share - diluted (in dollars per share)	(0.96)	(1.09)
Loss from discontinued operations per share - basic (in dollars per share)	(0.50)	0.44
Loss from discontinued operations per share - diluted (in dollars per share)	(0.50)	0.44
Earnings per share - basic (in dollars per share)	(1.46)	(0.65)
Earnings per share - diluted (in dollars per share)	$ (1.46)	$ (0.65)
Weighted average antidilutive options, unvested RSUs and RSAs, unvested PSUs and ESPP shares excluded from the computation (in shares)	3,305	858
Employee Stock Option
Effect of dilutive securities
Dilutive options outstanding, unvested stock units and unvested stock awards (in shares)	0	0
PSUs, RSUs, and restricted stock
Effect of dilutive securities
Dilutive options outstanding, unvested stock units and unvested stock awards (in shares)	0	0