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GOODWILL AND OTHER INTANGIBLE ASSETS (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Amortizing intangible assets [Abstract]    
Gross carrying value [1] $ 3,516 $ 3,237
Accumulated amortization [1] (1,563) (1,141)
Net carrying value [1] 1,953 2,096
Non-amortized intangible assets [Abstract]    
Goodwill 23,296 21,089
Actual and Estimated Future Amortization Expense [Abstract]    
Amortization expense 474  
Estimated Amortization Expense [Abstract]    
2018 480  
2019 407  
2020 312  
2021 253  
2022 197  
MSRs [Member]    
Amortizing intangible assets [Abstract]    
Gross carrying value [1] 1,605 1,471
Accumulated amortization [1] (912) (787)
Net carrying value [1] 693 684
Actual and Estimated Future Amortization Expense [Abstract]    
Amortization expense 177  
Estimated Amortization Expense [Abstract]    
2018 184  
2019 148  
2020 115  
2021 88  
2022 64  
Core Deposit Intangibles [Member]    
Amortizing intangible assets [Abstract]    
Gross carrying value [1] 1,786 1,641
Accumulated amortization [1] (586) (320)
Net carrying value [1] 1,200 1,321
Actual and Estimated Future Amortization Expense [Abstract]    
Amortization expense 266  
Estimated Amortization Expense [Abstract]    
2018 265  
2019 230  
2020 197  
2021 165  
2022 133  
Covenant not to Compete [Member]    
Amortizing intangible assets [Abstract]    
Gross carrying value [1] 125 125
Accumulated amortization [1] (65) (34)
Net carrying value [1] 60 $ 91
Actual and Estimated Future Amortization Expense [Abstract]    
Amortization expense 31  
Estimated Amortization Expense [Abstract]    
2018 31  
2019 29  
2020 0  
2021 0  
2022 $ 0  
[1] Excludes fully amortized intangible assets