v2.4.0.8
Derivative Financial Instruments (Change in Unrealized Appreciation/Depreciation) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives $ (98) $ (509) $ 2,337 $ (1,371)
Credit default swaps
       
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives     (832) (852)
Interest rate swaps
       
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives     3,169 (519)
Credit risk
       
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives     (832) (852)
Credit risk | Credit default swaps
       
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives     (832) (852)
Credit risk | Interest rate swaps
       
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives     0 0
Interest rate risk
       
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives     3,169 (519)
Interest rate risk | Credit default swaps
       
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives     0 0
Interest rate risk | Interest rate swaps
       
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives     3,169 (519)
Equity price risk
       
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives     0 0
Equity price risk | Credit default swaps
       
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives     0 0
Equity price risk | Interest rate swaps
       
Derivative [Line Items]        
Change in unrealized (depreciation)/appreciation - derivatives     $ 0 $ 0