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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	Dec. 31, 2019	Dec. 31, 2018
Amortizable intangible assets:
Gross Carrying Amount	$ 43,532	$ 41,228
Accumulated Amortization	26,315	20,116
Unamortizable intangible assets:
Goodwill	234,368	234,368
Customer lists
Amortizable intangible assets:
Gross Carrying Amount	6,013	6,013
Accumulated Amortization	2,185	1,637
Core deposit intangibles
Amortizable intangible assets:
Gross Carrying Amount	28,440	28,440
Accumulated Amortization	20,610	16,469
SBA servicing asset
Amortizable intangible assets:
Gross Carrying Amount	7,776	5,472
Accumulated Amortization	2,393	1,053
Other
Amortizable intangible assets:
Gross Carrying Amount	1,303	1,303
Accumulated Amortization	$ 1,127	$ 957

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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