Statement of Changes in Members' Capital (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Beginning balance		$ 73,428
Net income		1,016	$ 1,051
Early withdrawal penalties	[1]	0	4
Ending balance		72,120
RMC [Member]
Early withdrawal penalties		3	8
Capital Members [Member]
Beginning balance		78,192	80,801
Net income		1,006	1,041
Organization and offering expenses allocated		(73)	(77)
Ending balance		76,654	80,286
Capital Members [Member] | Earnings Distributed To Members [Member]
Partners capital accounts		(1,071)	(1,126)
Capital Members [Member] | Earnings Distributed Used In DRIP [Member]
Partners capital accounts		527	574
Capital Members [Member] | Member's Redemptions [Member]
Partners capital accounts		(1,927)	(927)
Managers Capital Net [Member]
Beginning balance		82	182
Net income		10	10
Ending balance		82	192
Managers Capital Net [Member] | Earnings Distributed To Members [Member]
Partners capital accounts		(10)
Unallocated Organization and Offering Expenses [Member]
Beginning balance		(1,458)	(1,858)
Organization and offering expenses allocated		73	77
Early withdrawal penalties			4
Ending balance		(1,351)	(1,759)
Unallocated Organization and Offering Expenses [Member] | RMC [Member]
Organization and offering expenses repaid by RMC		34	18
Members Capital, Net [Member]
Beginning balance		76,816	79,125
Net income		1,016	1,051
Early withdrawal penalties			4
Ending balance		75,385	78,719
Members Capital, Net [Member] | RMC [Member]
Organization and offering expenses repaid by RMC		34	18
Members Capital, Net [Member] | Earnings Distributed To Members [Member]
Partners capital accounts		(1,081)	(1,126)
Members Capital, Net [Member] | Earnings Distributed Used In DRIP [Member]
Partners capital accounts		527	574
Members Capital, Net [Member] | Member's Redemptions [Member]
Partners capital accounts		$ (1,927)	$ (927)

[1] Beginning in 2022, RMC discontinued the specific allocation of early withdrawal penalties it received to the formation loan and to the amount owed for unallocated O&O expenses on redeeming-members’ accounts. Prior to 2022, the O&O expenses component of early withdrawal penalties were applied as a reduction to O&O expenses to be repaid by RMC to members’ capital on scheduled redemptions. The amounts credited were determined by the ratio between the amount of the formation loan and the amount of offering costs incurred by the company. The change in 2022 has no net effect on the amounts paid by RMC to RMI IX.