Intangible Assets and Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Goodwill [Roll Forward]
Beginning balance, Goodwill	$ 17,894	$ 69
Additions from acquisition	$ 1,150	17,825
ImpairmentOfIntangibleAssetFiniteLivedStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag	Write off from impairment
Write off from impairment	$ (19,044)	0
Ending balance, Goodwill	$ 0	$ 17,894