Goodwill and Other Intangible Assets - Carrying Value of Intangibles (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Net Carrying Value	$ 7,728	$ 926
Goodwill
Gross Carrying Value	84,002	43,872
Net Carrying Value	84,002	43,872	$ 43,872
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	19,708	11,508
Accumulated Amortization	(11,980)	(10,582)
Net Carrying Value	$ 7,728	$ 926

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

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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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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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Amount before 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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