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Goodwill and Other Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Amortized intangible assets [Abstract]          
Gross carrying value [1] $ 3,326   $ 3,326   $ 3,237
Accumulated amortization [1] (1,381)   (1,381)   (1,141)
Net carrying value [1] 1,945   1,945   2,096
Unamortized intangible assets [Abstract]          
Goodwill 21,089   21,089   21,089
Actual and Estimated Future Amortization Expense [Abstract]          
Amortization expense 118 $ 126 240 $ 254  
Estimated Amortization Expense [Abstract]          
Remaining 2017 243   243    
2018 426   426    
2019 363   363    
2020 275   275    
2021 220   220    
MSRs [Member]          
Amortized intangible assets [Abstract]          
Gross carrying value [1] 1,560   1,560   1,471
Accumulated amortization [1] (878)   (878)   (787)
Net carrying value [1] 682   682   684
Actual and Estimated Future Amortization Expense [Abstract]          
Amortization expense 45 44 91 90  
Estimated Amortization Expense [Abstract]          
Remaining 2017 95   95    
2018 160   160    
2019 127   127    
2020 98   98    
2021 73   73    
Core Deposit Intangibles [Member]          
Amortized intangible assets [Abstract]          
Gross carrying value [1] 1,641   1,641   1,641
Accumulated amortization [1] (454)   (454)   (320)
Net carrying value [1] 1,187   1,187   1,321
Actual and Estimated Future Amortization Expense [Abstract]          
Amortization expense 66 74 134 148  
Estimated Amortization Expense [Abstract]          
Remaining 2017 132   132    
2018 236   236    
2019 206   206    
2020 177   177    
2021 147   147    
Covenant not to Compete [Member]          
Amortized intangible assets [Abstract]          
Gross carrying value [1] 125   125   125
Accumulated amortization [1] (49)   (49)   (34)
Net carrying value [1] 76   76   $ 91
Actual and Estimated Future Amortization Expense [Abstract]          
Amortization expense 7 $ 8 15 $ 16  
Estimated Amortization Expense [Abstract]          
Remaining 2017 16   16    
2018 30   30    
2019 30   30    
2020 0   0    
2021 $ 0   $ 0    
[1] Excludes fully amortized intangible assets