Derivative Instruments - Offsetting Derivatives (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Offsetting Derivative Assets
Gross amounts recognized	$ 30,352	$ 3,866
Gross amounts offset in the consolidated balance sheets	0	0
Net amounts presented in the consolidated balance sheets	30,352	3,866
Financial instruments	9,172	3,866
Financial collateral pledged	0	0
Net amounts	21,180	0
Offsetting Derivative Liabilities
Gross amounts recognized	18,501	21,107
Gross amounts offset in the consolidated balance sheets	0	0
Net amounts presented in the consolidated balance sheets	18,501	21,107
Financial instruments	9,172	3,866
Financial collateral pledged	9,329	14,042
Net amounts	$ 0	$ 3,199

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