Stockholders' Equity, Investor Voting Warrants (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 28, 2016	Sep. 30, 2021	Sep. 30, 2020
Investor Voting Warrants [Abstract]
Warrant liability		$ 0	$ 0
Recognized (income) expense		$ (800)	$ (1,300)
Goldman and Beekman [Member]
Investor Voting Warrants [Abstract]
Number of shares issued (in shares)			2,148,806
Investor Voting Warrants [Member]
Investor Voting Warrants [Abstract]
Common unit warrants issued (in shares)	25,000
Common unit warrants in exchange price	$ 1,000
Common unit warrants term (in years)	10 years
Common units redemption term (in years)	5 years