XML 66 R42.htm IDEA: XBRL DOCUMENT v3.25.0.1
Formation and Business Purpose (Details) - USD ($)
$ in Thousands
 12 Months Ended 163 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2024
Summary of Investment Holdings [Line Items]        
Net proceeds from offerings of common stock $ 67,690 $ 21,241 $ 40,006 $ 1,034,550
Minimum        
Summary of Investment Holdings [Line Items]        
EBITDA as defined for middle market business 10,000      
Maximum        
Summary of Investment Holdings [Line Items]        
EBITDA as defined for middle market business 200,000      
New Mountain Capital | Minimum        
Summary of Investment Holdings [Line Items]        
Assets under management $ 55,000,000     $ 55,000,000