Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Assets [Roll Forward]
Total goodwill, end of period	$ 823,172	$ 823,172	$ 765,842
Established through acquisitions	0	57,330	0
Core deposit intangible, net, beginning of period	34,647
CDI current period amortization	(8,698)	(7,987)	(8,724)
Indefinite-lived Intangible Assets (Excluding Goodwill)	919	919	919
Total core deposit intangible, end of period	25,949	34,647
Intangible Assets, Net (Excluding Goodwill)	25,949	34,647	26,734
Total goodwill and intangible assets, end of period	849,121	857,819	792,576
Core Deposits
Goodwill and Intangible Assets [Roll Forward]
Gross core deposit intangible balance, beginning of period	88,931	78,821	105,473
Accumulated amortization, beginning of period	(55,203)	(53,006)	(70,934)
Core deposit intangible, net, beginning of period	33,728	25,815	34,539
Established through acquisitions	0	15,900	0
CDI current period amortization	(8,698)	(7,987)	(8,724)
Total core deposit intangible, end of period	$ 25,030	$ 33,728	$ 25,815
Estimated life of CDI, in years	10 years