Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net Income	$ 303,202	$ 284,757	$ 266,400
Available-For-Sale and Transferred Securities:
Unrealized (losses) gains on available-for-sale securities	(672,570)	(151,426)	139,208
Reclassification adjustment for losses included in net income	(1,336)	(790)	(1,138)
Reclassification adjustment for securities transferred from available-for-sale to held-to-maturity	2,990	(3,551)	0
Tax effect	169,540	39,362	(34,853)
Net of tax amount	(501,376)	(116,405)	103,217
Cash Flow Hedge:
Unrealized gains (losses) on derivatives used for cash flow hedges	7,809	901	(472)
Reclassification adjustment for losses included in net income	(817)	0	0
Tax effect	(1,767)	(227)	119
Net of tax amount	5,225	674	(353)
Total other comprehensive (loss) income, net of tax	(496,151)	(115,731)	102,864
Total Comprehensive (Loss) Income	$ (192,949)	$ 169,026	$ 369,264