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Financial Derivatives Narrative (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Derivative [Line Items]    
U.S. Treasury securities sold short, at fair value $ 1,957 $ 498
Financial derivatives–liabilities, at fair value 2,481 3,119
US Treasury Securities [Member]    
Derivative [Line Items]    
U.S. Treasury securities sold short, at fair value 2,000 500
Investment Sold, Not yet Purchased, Balance, Principal Amount 2,000 500
Credit Default Swap | Derivative Financial Instruments, Liabilities [Member]    
Derivative [Line Items]    
Financial derivatives–liabilities, at fair value 381 $ 0
Credit Default Swap | Derivative Financial Instruments, Liabilities [Member] | Credit default swap on corporate bond indices [Member]    
Derivative [Line Items]    
Derivative, Notional Amount 25,000  
Financial derivatives–liabilities, at fair value $ (400)  
Derivative, Remaining Maturity 4 years 11 months 23 days