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FAIR VALUE OF FINANCIAL INSTRUMENTS, By Balance Sheet Grouping (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Financial Assets [Abstract]    
Interest bearing time deposits with other banks $ 10,283 $ 6,955
Available-for-sale securities $ 254,782 314,017
Financial Liabilities [Abstract]    
Consideration period for recognition of cash and due from banks 90 days  
Consideration period for recognition of accrued interest receivable and payable 90 days  
Level I [Member]    
Financial Assets [Abstract]    
Cash and due from banks $ 18,517 17,754
Interest bearing time deposits with other banks 0 0
Available-for-sale securities 28,695 5,899
Loans held for sale 1,439 1,827
Net loans 0 0
Bank owned life insurance 26,883 26,223
Regulatory stock 6,784 5,306
Accrued interest receivable 4,196 4,089
Financial Liabilities [Abstract]    
Deposits 838,490 740,889
Borrowed funds 77,650 41,330
Accrued interest payable 897 720
Level II [Member]    
Financial Assets [Abstract]    
Cash and due from banks 0 0
Interest bearing time deposits with other banks 0 0
Available-for-sale securities 226,087 308,118
Loans held for sale 0  
Net loans 0 0
Bank owned life insurance 0 0
Regulatory stock 0 0
Accrued interest receivable 0 0
Financial Liabilities [Abstract]    
Deposits 0 0
Borrowed funds 0 0
Accrued interest payable 0 0
Level III [Member]    
Financial Assets [Abstract]    
Cash and due from banks 0 0
Interest bearing time deposits with other banks 10,287 6,960
Available-for-sale securities 0 0
Loans held for sale 0  
Net loans 981,238 797,184
Bank owned life insurance 0 0
Regulatory stock 0 0
Accrued interest receivable 0 0
Financial Liabilities [Abstract]    
Deposits 263,093 263,183
Borrowed funds 35,802 36,095
Accrued interest payable 0 0
Carrying Amount [Member]    
Financial Assets [Abstract]    
Cash and due from banks 18,517 17,754
Interest bearing time deposits with other banks 10,283 6,955
Available-for-sale securities 254,782 314,017
Loans held for sale 1,439 1,827
Net loans 989,335 790,725
Bank owned life insurance 26,883 26,223
Regulatory stock 6,784 5,306
Accrued interest receivable 4,196 4,089
Financial Liabilities [Abstract]    
Deposits 1,104,943 1,005,503
Borrowed funds 114,664 79,662
Accrued interest payable 897 720
Fair Value [Member]    
Financial Assets [Abstract]    
Cash and due from banks 18,517 17,754
Interest bearing time deposits with other banks 10,287 6,960
Available-for-sale securities 254,782 314,017
Loans held for sale 1,439 1,827
Net loans 981,238 797,184
Bank owned life insurance 26,883 26,223
Regulatory stock 6,784 5,306
Accrued interest receivable 4,196 4,089
Financial Liabilities [Abstract]    
Deposits 1,101,583 1,004,072
Borrowed funds 113,452 77,425
Accrued interest payable $ 897 $ 720