Derivative Instruments and Hedging Activities - Effect Of Derivatives On Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total cash flow hedges	$ (14,285)	$ 0	$ (14,285)	$ 0
Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total cash flow hedges	(14,185)	(194)	(11,116)	(1,394)
Interest Income | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total cash flow hedges	2,165	824	5,234	3,572
Interest Expense | Designated as Hedging Instrument | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total cash flow hedges	$ (16,350)	$ (1,018)	$ (16,350)	$ (4,966)