Unaudited Condensed Consolidated Statements of Comprehensive (Loss) Income - 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	$ 76,392	$ 77,627	$ 144,187	$ 158,429
Available-For-Sale and Transferred Securities:
Unrealized (losses) gains on available-for-sale securities	(108,253)	15,073	(477,977)	(69,670)
Reclassification adjustment for gains included in net income	(87)	(46)	(765)	(372)
Reclassification adjustment for securities transferred from available-for-sale to held-to-maturity	1,186	(803)	404	(858)
Tax effect	27,078	(3,595)	120,876	17,916
Net of tax amount	(80,076)	10,629	(357,462)	(52,984)
Cash Flow Hedge:
Unrealized gains (losses) on derivatives used for cash flow hedges	903	(144)	3,870	449
Reclassification adjustment for gains included in net income	(2)	0	(2)	0
Tax effect	(228)	37	(977)	(113)
Net of tax amount	673	(107)	2,891	336
Total other comprehensive (loss) income, net of tax	(79,403)	10,522	(354,571)	(52,648)
Total Comprehensive (Loss) Income	$ (3,011)	$ 88,149	$ (210,384)	$ 105,781