Goodwill and Other Intangible Assets (Summary of the Gross Carrying Amount and Accumulated Amortization of Intangible Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Amortizable intangible assets:
Gross Carrying Amount	$ 44,527	$ 43,782
Accumulated Amortization	27,599	25,955
Unamortizable intangible assets:
Goodwill	364,263	364,263
Customer lists
Amortizable intangible assets:
Gross Carrying Amount	2,700	2,700
Accumulated Amortization	1,501	1,386
Core deposit intangibles
Amortizable intangible assets:
Gross Carrying Amount	29,050	29,050
Accumulated Amortization	18,972	18,076
SBA servicing assets
Amortizable intangible assets:
Gross Carrying Amount	12,677	11,932
Accumulated Amortization	7,086	6,460
Other
Amortizable intangible assets:
Gross Carrying Amount	100	100
Accumulated Amortization	$ 40	$ 33