Income Taxes - Schedule of Components of Loss from Continuing Operations Before Income Tax Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
U.S.	$ 10,071	$ 3,416
Non-U.S.	(1,091)	(11,623)
Income (loss) before income tax benefit	$ 8,980	$ (8,207)