v3.26.1
MEMBERS' CAPITAL - Distributions Declared and Payable (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dividends Payable [Line Items]        
Per Unit Amount     $ 0.7837 $ 0.8509
Total Amount $ 69,973 $ 79,929 $ 143,514 $ 156,963
Dividend Declare Date January 27, 2026        
Dividends Payable [Line Items]        
Date Declared     Jan. 26, 2026  
Record Date     Jan. 31, 2026  
Payment Date     Feb. 04, 2026  
Per Unit Amount     $ 0.125  
Total Amount     $ 22,986  
Dividend Declare Date February 27, 2026        
Dividends Payable [Line Items]        
Date Declared     Feb. 23, 2026  
Record Date     Feb. 28, 2026  
Payment Date     Mar. 04, 2026  
Per Unit Amount     $ 0.125  
Total Amount     $ 23,141  
Dividend Declare Date March 25, 2026        
Dividends Payable [Line Items]        
Date Declared     Mar. 23, 2026  
Record Date     Mar. 31, 2026  
Payment Date     Apr. 06, 2026  
Per Unit Amount     $ 0.125  
Total Amount     $ 23,423  
Special Dividend Declare Date March 25, 2026        
Dividends Payable [Line Items]        
Date Declared [1]     Mar. 23, 2026  
Record Date [1]     Mar. 31, 2026  
Payment Date [1]     Apr. 06, 2026  
Per Unit Amount [1]     $ 0.0213  
Total Amount [1]     $ 3,991  
Dividend Declare Date January 27, 2025        
Dividends Payable [Line Items]        
Date Declared       Jan. 27, 2025
Record Date       Jan. 31, 2025
Payment Date       Feb. 05, 2025
Per Unit Amount       $ 0.1265
Total Amount       $ 22,270
Dividend Declare Date February 27, 2025        
Dividends Payable [Line Items]        
Date Declared       Feb. 27, 2025
Record Date       Feb. 28, 2025
Payment Date       Mar. 05, 2025
Per Unit Amount       $ 0.1263
Total Amount       $ 22,696
Dividend Declare Date March 25, 2025        
Dividends Payable [Line Items]        
Date Declared       Mar. 25, 2025
Record Date       Mar. 31, 2025
Payment Date       Apr. 03, 2025
Per Unit Amount       $ 0.1263
Total Amount       $ 23,317
Special Dividend Declare Date January 27, 2025        
Dividends Payable [Line Items]        
Date Declared [1]       Jan. 27, 2025
Record Date [1]       Mar. 31, 2025
Payment Date [1]       Apr. 03, 2025
Per Unit Amount [1]       $ 0.0474
Total Amount [1]       $ 8,751
Dividend Declare Date April 24, 2026        
Dividends Payable [Line Items]        
Date Declared     Apr. 24, 2026  
Record Date     Apr. 30, 2026  
Payment Date     May 05, 2026  
Per Unit Amount     $ 0.1234  
Total Amount     $ 22,163  
Dividend Declare Date May 26, 2026        
Dividends Payable [Line Items]        
Date Declared     May 26, 2026  
Record Date     May 31, 2026  
Payment Date     Jun. 03, 2026  
Per Unit Amount     $ 0.1227  
Total Amount     $ 22,152  
Dividends Date Declared June 22, 2026        
Dividends Payable [Line Items]        
Date Declared     Jun. 22, 2026  
Record Date     Jun. 30, 2026  
Payment Date     Jul. 06, 2026  
Per Unit Amount     $ 0.1208  
Total Amount     $ 21,936  
Dividends Date Declared April 25, 2025        
Dividends Payable [Line Items]        
Date Declared       Apr. 25, 2025
Record Date       Apr. 30, 2025
Payment Date       May 05, 2025
Per Unit Amount       $ 0.1261
Total Amount       $ 23,346
Dividends Date Declared May 27, 2025        
Dividends Payable [Line Items]        
Date Declared       May 27, 2025
Record Date       May 31, 2025
Payment Date       Jun. 04, 2025
Per Unit Amount       $ 0.1259
Total Amount       $ 23,628
Dividend Date Declared June 18, 2025        
Dividends Payable [Line Items]        
Date Declared       Jun. 18, 2025
Record Date       Jun. 30, 2025
Payment Date       Jul. 03, 2025
Per Unit Amount       $ 0.1254
Total Amount       $ 23,971
Special Dividend Date Declared June 18, 2025        
Dividends Payable [Line Items]        
Date Declared [1]     Jun. 22, 2026  
Record Date [1]     Jun. 30, 2026  
Payment Date [1]     Jul. 06, 2026  
Per Unit Amount [1]     $ 0.0205  
Total Amount [1]     $ 3,722  
Special Dividends Date Declared June 22, 2025        
Dividends Payable [Line Items]        
Date Declared [1]       Jun. 18, 2025
Record Date [1]       Jun. 30, 2025
Payment Date [1]       Jul. 03, 2025
Per Unit Amount [1]       $ 0.047
Total Amount [1]       $ 8,984
[1] Represents a special distribution.