Derivative Instruments - Narrative (Details) - Not Designated as Hedging Instruments - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative assets, notional	$ 137,154	$ 145,181
Derivative assets	8,615	13,967
Equity warrants
Derivative [Line Items]
Derivative assets, notional	0	0
Derivative assets	1,903	1,914
Over the Counter
Derivative [Line Items]
Derivative assets, notional	137,200	145,200
Derivative assets	$ 6,700	$ 12,100