v3.26.1
Manager and Other Related Parties - Summary of Organization and Offering Expenses (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Managers And Other Related Parties Details [Line Items]        
Balance, January 1     $ (59,051)  
Balance, June 30 $ (57,956)   (57,956)  
Unallocated Organization and Offering Expenses [Member]        
Managers And Other Related Parties Details [Line Items]        
Balance, January 1 192 $ 409 230 $ 471
O&O expenses allocated (33) (56) (68) (113)
O&O expenses paid by RMC [1]     (5) (11)
Balance, June 30 $ 157 $ 347 $ 157 $ 347
[1] RMC is obligated per the Operating Agreement to repay RMI IX for the amount of unallocated O&O expenses attributed to a member’s capital account if the member redeems prior to the 40 quarterly allocations. RMC estimated its future obligation to repay unallocated O&O expenses on scheduled redemptions as of June 30, 2026, to be approximately $3 thousand.