Members' Equity (Narrative) (Details) - shares	Sep. 30, 2019	Sep. 30, 2018
Capital Unit [Line Items]
Capital Units, Outstanding	13,327	13,327
Capital Unit, Class A [Member]
Capital Unit [Line Items]
Capital Units, Outstanding	8,993	8,993
Capital Unit, Class B [Member]
Capital Unit [Line Items]
Capital Units, Outstanding	3,334	3,334
Capital Unit Class C [Member]
Capital Unit [Line Items]
Capital Units, Outstanding	1,000	1,000