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Goodwill and Intangible Assets - Schedule of Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Finite Lived Intangible Assets [Line Items] |  |
Goodwill, Gross Carrying Value | $ 108,752 | $ 108,752
Goodwill, Accumulated Amortization | 3,760 | 3,760
Goodwill and Intangible Assets, Gross Carrying Value | 160,511 | 160,251
Goodwill and Intangible Assets, Accumulated Amortization | 31,885 | 28,438
Intangibles from Branch Acquisition |  |
Finite Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Value | 3,015 | 3,015
Intangible Assets, Accumulated Amortization | 3,015 | 3,015
Core Deposit Intangibles |  |
Finite Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Value | 32,355 | 32,355
Intangible Assets, Accumulated Amortization | 20,214 | 17,746
Other Intangibles |  |
Finite Lived Intangible Assets [Line Items] |  |
Intangible Assets, Gross Carrying Value | 16,389 | 16,129
Intangible Assets, Accumulated Amortization | $ 4,896 | $ 3,917

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