Goodwill and Intangible Assets (Schedule of Goodwill and Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Goodwill and Intangible Assets [Roll Forward]
Total goodwill			$ 823,172
CDI current period amortization	$ (2,219)	$ (1,835)	(6,726)	$ (5,611)
Indefinite-lived Intangible Assets (Excluding Goodwill)	919	919	919	919
Other intangible assets, net	27,921	21,123	27,921	21,123		$ 34,647
Total goodwill and intangible assets, end of period	851,093	786,965	851,093	786,965
Core Deposits [Member]
Goodwill and Intangible Assets [Roll Forward]
Gross core deposit intangible balance, beginning of period					$ 88,931	88,931	$ 105,473	$ 105,473
Accumulated amortization at beginning of period					$ (59,710)	$ (55,203)	$ (83,434)	$ (79,658)
Core deposit intangible, net, beginning of period	29,221	22,039	33,728	25,815
CDI current period amortization	(2,219)	(1,835)	(6,726)	(5,611)
Total core deposit intangible, end of period	$ 27,002	$ 20,204	$ 27,002	$ 20,204