Other Assets - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 4,274	$ 7,221
Other current assets	5,032	5,736
Total prepaid expenses and other current assets	$ 9,306	$ 12,957