v3.25.4
MEMBERS' CAPITAL - Unit Repurchase Program (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Equity [Abstract]                      
Percent of unit authorized to be purchased each quarter 5.00%               5.00%    
Percentage of Outstanding Units the Company Offered to Repurchase [1] 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00%  
Price Paid Per Unit (in dollars per share) $ 18.57 $ 18.7 $ 18.77 $ 18.82 $ 18.96 $ 19 $ 19.07 $ 19.05      
Amount Repurchased $ 181,587 $ 107,961 $ 107,041 $ 65,290 $ 55,792 $ 37,636 $ 52,219 $ 28,707 $ 461,879 $ 174,354 $ 110,774
Number of Units Repurchased (in units) 9,778,471 5,773,310 5,702,776 3,469,202 2,942,591 1,980,872 2,738,253 1,506,944 24,723,759 9,168,660  
Percentage of Outstanding Units Repurchased [1] 5.25% 3.11% 3.15% 2.01% 1.78% 1.26% 1.94% 1.25% 5.25% 1.78%  
Maximum number of units that may yet be purchased under the repurchase program (in units) [2] 0 0 0 0 0 0 0 0 0 0  
[1] Percentage is based on total units as of the close of the previous calendar quarter.
[2] All repurchase requests were satisfied in full.