Preferred Units (Tables)

6 Months Ended

Mar. 31, 2021

Temporary Equity Disclosure [Abstract]

Summary of Changes in Preferred Units

The tables below summarize the changes in preferred units during the three and six months ended March 31, 2021 and 2020:

	Units	Amount
		($ in thousands)
Balance, September 30, 2020	504,168	$	60,292
Dividends paid in kind	7,527	904
Balance, December 31, 2020	511,695	61,196
Units converted to common units	(511,695)	(61,196)
Balance, March 31, 2021	—	$	—

	Units	Amount
		($ in thousands)
Balance, September 30, 2019	475,152	$	56,810
Dividends paid in kind	7,094	851
Balance, December 31, 2019	482,246	57,661
Dividends paid in kind	7,199	864
Balance, March 31, 2020	489,445	$	58,525