Derivative Financial Instruments - Offsetting Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Offsetting of Derivative Assets
Gross Amounts of Recognized Assets	$ 0	$ 6,855
Gross Amounts Offset in the Consolidated Balance Sheet	0	0
Net Amounts of Assets Presented in the Consolidated Balance Sheet	0	6,855
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Financial Instruments	0	3,966
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received	0	0
Net Amount	0	2,889
Offsetting of Derivative Liabilities
Gross Amounts of Recognized Liabilities	9,611	6,094
Gross Amounts Offset in the Consolidated Balance Sheet	0	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	9,611	6,094
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Financial Instruments	0	3,966
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheet, Cash Collateral Received	0	0
Net Amount	$ 9,611	$ 2,128

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