v3.25.4
INVESTMENTS - Selected Statement of Operations Information For STRS JV (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Schedule of Investments [Line Items]      
Total investment income $ 72,672 $ 92,817 $ 103,260
Administrative service fees 683 683 683
Total expenses, before fees waived 46,100 54,458 59,582
Net investment income after excise tax 26,110 37,238 42,713
Net increase (decrease) in net assets resulting from operations 14,337 10,851 20,412
STRS JV      
Schedule of Investments [Line Items]      
Interest and fee income 36,576 39,833 40,334
Total investment income 36,576 39,833 40,334
Interest expense on credit facility 12,930 14,433 14,558
Interest expense on notes to members 13,802 14,971 14,403
Administrative service fees 674 651 652
Other expenses 925 816 636
Total expenses, before fees waived 28,331 30,871 30,249
Net investment income after excise tax 8,245 8,962 10,085
Net realized gains (losses) on investments and foreign currency transactions (1,016) 91 312
Net change in unrealized appreciation (depreciation) on investments and foreign currency transactions (844) 1,329 1,229
Net increase (decrease) in net assets resulting from operations $ 6,385 $ 10,382 $ 11,626