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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

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