Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities Credit Risk - Counterparty Exposure (Details)

v3.19.2
Derivative Instruments and Hedging Activities Credit Risk - Counterparty Exposure (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Derivative assets, at fair value $ 246,995 $ 319,981
Derivative liabilities, at fair value $ (255) $ (820,590)