Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 466,151	$ 292,990	$ 355,697
Unrealized (losses) gains on available-for-sale securities
Before tax	(83,199)	76,464	79,702
Tax effect	22,152	(20,378)	(21,361)
Net of tax	(61,047)	56,086	58,341
Reclassification of net gains on available-for-sale securities included in net income
Before tax	1,079	221	899
Tax effect	(290)	(59)	(241)
Net of tax	789	162	658
Reclassification of amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale
Before tax	241	231	479
Tax effect	(64)	(62)	(131)
Net of tax	177	169	348
Net unrealized (losses) gains on available-for-sale securities	(62,013)	55,755	57,335
Unrealized gains (losses) on derivative instruments
Before tax	68,441	(13,591)	(28,685)
Tax effect	(18,240)	3,642	7,687
Net unrealized gains (losses) on derivative instruments	50,201	(9,949)	(20,998)
Foreign currency translation adjustment
Before tax	620	5,367	7,483
Tax effect	(98)	(1,113)	(1,626)
Net foreign currency translation adjustment	522	4,254	5,857
Total other comprehensive (loss) income	(11,290)	50,060	42,194
Comprehensive income	$ 454,861	$ 343,050	$ 397,891