Acquisitions and Divestitures - Pro Forma Operating Results (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Business Combinations [Abstract]
Total Revenues	$ 151,036	$ 76,933
Pro Forma Net Income (Loss) from Continuing Operations	(30,146)	33,075
Pro Forma Net Income (Loss) from Discontinued Operations	275	(18,203)
Pro Forma Net Income (Loss) before Taxes	(29,871)	14,872
Pro forma income tax benefit (expense)	6,273	(3,123)
Pro Forma Net Income (Loss)	$ (23,598)	$ 11,749
Net Income (Loss) per Share/Unit from Continuing Operations, Basic (USD per share)	$ (1.88)	$ 0.66
Net Income (Loss) per Share/Unit from Continuing Operations, Diluted (USD per share)	(1.88)	0.71
Net Income (Loss) per Share/Unit from Discontinued Operations, Basic (USD per share)	0.02	(1.46)
Net Income (Loss) per Share/Unit from Discontinued Operations, Diluted (USD per share)	$ 0.02	$ (1.46)