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Preferred Units (Tables)
3 Months Ended
Dec. 31, 2020
Temporary Equity Disclosure [Abstract]  
Summary of Changes in Preferred Units
The tables below summarize the changes in preferred units during the three months ended December 31, 2020 and 2019:
UnitsAmount
($ in thousands)
Balance, September 30, 2020504,168 $60,292 
Dividends paid in kind7,527 904 
Balance, December 31, 2020511,695 $61,196 

UnitsAmount
($ in thousands)
Balance, September 30, 2019475,152 $56,810 
Dividends paid in kind7,094 851 
Balance, December 31, 2019482,246 $57,661