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Goodwill and Other Intangible Assets - Schedule of Intangible Assets and Goodwill (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, Gross carrying amount $ 8,906 $ 8,702
Intangible assets, Accumulated amortization (5,676) (5,043)
Intangible assets, Net carrying amount 3,230 3,659
Core Deposit Intangible Assets [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, Gross carrying amount 2,067 2,067
Intangible assets, Accumulated amortization (1,540) (1,381)
Intangible assets, Net carrying amount 527 686
Lease Intangible Asset [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, Gross carrying amount 350 350
Intangible assets, Accumulated amortization (222) (188)
Intangible assets, Net carrying amount 128 162
Mortgage Servicing Rights [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, Gross carrying amount 6,489 6,285
Intangible assets, Accumulated amortization (3,914) (3,474)
Intangible assets, Net carrying amount $ 2,575 $ 2,811