v3.25.4
FAIR VALUE MEASUREMENTS (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
FAIR VALUE MEASUREMENTS    
Investments, fair value $ 578,649 $ 642,213
Money Market Fair Value 5,187  
First lien secured loans    
FAIR VALUE MEASUREMENTS    
Investments, fair value 429,573 502,693
Second lien secured loans    
FAIR VALUE MEASUREMENTS    
Investments, fair value 4,839 8,342
Unsecured loans    
FAIR VALUE MEASUREMENTS    
Investments, fair value 1,286 1,175
Subordinated Note to STRS JV    
FAIR VALUE MEASUREMENTS    
Investments, fair value 84,416 84,416
Equity (excluding STRS JV)    
FAIR VALUE MEASUREMENTS    
Investments, fair value 36,933 22,846
Equity in STRS JV    
FAIR VALUE MEASUREMENTS    
Investments, fair value 21,602 22,741
Level 1    
FAIR VALUE MEASUREMENTS    
Money Market Fair Value 21,048 13,249
Level 2 | Foreign currency forward contracts    
FAIR VALUE MEASUREMENTS    
Investments, fair value (323) 20
Level 3    
FAIR VALUE MEASUREMENTS    
Investments, fair value 557,047 619,472
Level 3 | First lien secured loans    
FAIR VALUE MEASUREMENTS    
Investments, fair value 429,573 502,693
Level 3 | Second lien secured loans    
FAIR VALUE MEASUREMENTS    
Investments, fair value 4,839 8,342
Level 3 | Unsecured loans    
FAIR VALUE MEASUREMENTS    
Investments, fair value 1,286 1,175
Level 3 | Subordinated Note to STRS JV    
FAIR VALUE MEASUREMENTS    
Investments, fair value 84,416 84,416
Level 3 | Equity (excluding STRS JV)    
FAIR VALUE MEASUREMENTS    
Investments, fair value $ 36,933 $ 22,846