Acquisitions and Divestitures - Pro Forma Operating Results (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Business Combinations [Abstract]
Total Revenues	$ 42,149	$ 6,019	$ 102,422	$ 60,974
Pro Forma Net Income (Loss) from Continuing Operations	(16,968)	(27,650)	(40,500)	40,589
Pro Forma Net Income (Loss) from Discontinued Operations	(882)	(106)	(873)	(18,239)
Pro Forma Net Income (Loss) before Taxes	(17,850)	(27,756)	(41,373)	22,350
Pro forma income tax benefit (expense)	3,749	5,829	8,688	(4,694)
Pro Forma Net Income (Loss)	$ (14,101)	$ (21,927)	$ (32,685)	$ 17,656
Net Income (Loss) per Share/Unit from Continuing Operations, Basic (USD per Share/Unit)	$ (950)	$ (1,940)	$ (2,510)	$ 2,590
Net Income (Loss) per Share/Unit from Continuing Operations, Diluted (USD per Share/Unit)	(950)	(1,940)	(2,510)	2,160
Net Income (Loss) per Share/Unit from Discontinued Operations, Basic (USD per Share/Unit)	(50.00)	(10.00)	(50.00)	(1,240)
Net Income (Loss) per Share/Unit from Discontinued Operations, Diluted (USD per Share/Unit)	$ (50.00)	$ (10.00)	$ (50.00)	$ (1,240)