CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 94,513	$ 105,109	$ 221,904	$ 258,257
Unrealized (losses) gains on available-for-sale securities
Before tax	(166,536)	6,312	(372,553)	(54,414)
Tax effect	44,382	(1,684)	99,285	14,523
Net of tax	(122,154)	4,628	(273,268)	(39,891)
Reclassification of net gains on available-for-sale securities included in net income
Before tax	0	584	250	794
Tax effect	0	(157)	(67)	(213)
Net of tax	0	427	183	581
Reclassification of amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale
Before tax	44	47	86	104
Tax effect	(12)	(13)	(23)	(28)
Net of tax	32	34	63	76
Net unrealized (losses) gains on available-for-sale securities	(122,186)	4,167	(273,514)	(40,548)
Unrealized gains (losses) on derivative instruments
Before tax	2,375	(8,788)	41,856	42,004
Tax effect	(634)	2,341	(11,166)	(11,194)
Net unrealized gains (losses) on derivative instruments	1,741	(6,447)	30,690	30,810
Foreign currency adjustment
Before tax	(8,260)	2,876	(5,418)	5,610
Tax effect	1,667	(567)	1,113	(1,121)
Net foreign currency adjustment	(6,593)	2,309	(4,305)	4,489
Total other comprehensive (loss) income	(127,038)	29	(247,129)	(5,249)
Comprehensive (loss) income	$ (32,525)	$ 105,138	$ (25,225)	$ 253,008