Derivative Instruments and Hedging Activities - Cash Flow Hedge Accounting on AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) recognized in other comprehensive income	$ (7,300)	$ 2,441	$ (17,340)	$ 3,899
Interest Income | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) recognized in other comprehensive income	5,951	5,944	27,955	9,297
Reclassification of gains (losses) included in net income	2,624	1,355	3,069	2,748
Interest Expense | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) recognized in other comprehensive income	(1,276)	(7,816)	(13,685)	(11,996)
Reclassification of gains (losses) included in net income	$ 0	$ (1,924)	$ 0	$ (3,948)