Derivative Instruments and Hedging Activities - Cash Flow Hedge Accounting on AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Losses) gains recognized in other comprehensive income	$ (2,091)	$ 28,614	$ (6,173)	$ 11,274
Reclassification of gains (losses) included in net income	0	14,285	0	14,285
Interest rate swaps in interest income | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Losses) gains recognized in other comprehensive income	(119)	96	235	28,051
Reclassification of gains (losses) included in net income	2,238	2,165	6,668	5,234
Interest rate swaps in interest expense | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Losses) gains recognized in other comprehensive income	(28)	(239)	(730)	(13,924)
Reclassification of gains (losses) included in net income	$ 0	$ (16,350)	$ 0	$ (16,350)