v3.3.0.814
Summary of Impact of Derivative Financial Instruments to Condensed Consolidated Statements of Operations (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Derivative [Line Items]        
Realized Gains (Losses) $ (1,377) $ 7,572 $ 6,214 $ 4,470
Net Change in Unrealized Gain (Loss) (8,805) (6,424) (18,480) (27,843)
Net Investment Hedges | Foreign Currency Contracts        
Derivative [Line Items]        
Hedge Ineffectiveness     229  
Freestanding Derivatives | Credit Default Swap        
Derivative [Line Items]        
Realized Gains (Losses) 646 763 4,427 2,045
Net Change in Unrealized Gain (Loss) (3,319) (1,060) (8,710) 3,738
Freestanding Derivatives | Foreign Currency Contracts        
Derivative [Line Items]        
Realized Gains (Losses) 53 4,327 8,956 1,346
Net Change in Unrealized Gain (Loss) 1,796 (5,253) (6,449) (27,197)
Freestanding Derivatives | Interest Rate Contracts        
Derivative [Line Items]        
Realized Gains (Losses) (2,076) 2,482 (7,169) 1,079
Net Change in Unrealized Gain (Loss) $ (7,282) $ (111) $ (3,321) $ (4,384)