Net Income (Loss) Per Share/Unit - Computation of Basic and Diluted Net Loss Per Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net income (loss) - Diluted	$ (7,168)	$ (33,272)	$ 14,230	$ (41,213)
Less: Dividends on preferred units	0	(574)	0	(1,491)
Net Income (Loss) Attributable to Common Shareholders/Unitholders	$ (7,168)	$ (33,846)	$ 14,230	$ (42,704)
Basic weighted-average common shares/units outstanding (in Shares/Units)	19,501	14,542	19,485	13,575
Effecting of dilutive securities:
Restricted shares/units (in Shares/Units)	0	0	99	0
Diluted weighted-average common shares/units outstanding (in Shares/Units)	19,501	14,542	19,584	13,575
Basic net income (loss) per common share/unit (USD per Share/Unit)	$ (0.37)	$ (2.33)	$ 0.73	$ (3.15)
Diluted net income (loss) per common share/unit (USD per Share/Unit)	$ (0.37)	$ (2.33)	$ 0.73	$ (3.15)