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Proposed Merger with BlackRock Capital Investment Corporation - Additional Information (Details)
$ / shares in Units, $ in Millions
Dec. 31, 2023
USD ($)
$ / shares
Sep. 06, 2023
USD ($)
$ / shares
Dec. 31, 2022
$ / shares
Business Acquisition [Line Items]      
Common stock, par value | $ / shares $ 0.001   $ 0.001
BlackRock Capital Investment Corporation      
Business Acquisition [Line Items]      
Common stock, par value | $ / shares   $ 0.001  
Base management fee rate   0.01  
Percentage of net asset value   200.00%  
Merger agreement percentage of aggregate expense incurred   50.00%  
Merger agreement transaction related expenses | $ $ 1.5    
BlackRock Capital Investment Corporation | Maximum      
Business Acquisition [Line Items]      
Base management fee rate   0.015  
Price per share | $ / shares   $ 0.32  
Merger agreement combined aggregate expense incurred | $   $ 6.0  
BlackRock Capital Investment Corporation | Minimum      
Business Acquisition [Line Items]      
Base management fee rate   0.0125  
Percentage of net asset value   200.00%  
Merger agreement combined aggregate expense incurred | $   $ 3.0