Derivative Instruments and Hedging Activities - Schedule of Gross Amounts of Derivative Assets and Derivative Liabilities (Details) - Not Designated as Hedging Instruments - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Assets
Derivatives (included in Other Assets)
Gross amounts recognized	$ 82,655	$ 26,146
Gross amounts offset	(4,336)	(499)
Net amounts presented in the Consolidated Balance Sheets	78,319	25,647
Gross amounts not offset	0	0
Net Amount	78,319	25,647
Other Liabilities
Derivatives (included in Other Liabilities)
Gross amounts recognized	82,626	26,114
Gross amounts offset	(3,593)	(499)
Net amounts presented in the Consolidated Balance Sheets	79,033	25,615
Gross amounts not offset	(77,930)	(26,127)
Net Amount	$ 1,103	$ (512)