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INVESTMENT SECURITIES (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
USD ($)
Security
Dec. 31, 2016
USD ($)
Security
Dec. 31, 2015
USD ($)
Security
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]      
Amortized cost $ 255,122 $ 312,039  
Gross Unrealized Gains 948 3,087  
Gross Unrealized Losses (1,288) (1,109)  
Fair value $ 254,782 314,017  
Number of securities owned with fair value less than cost | Security 122    
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]      
Less than twelve months, Fair value $ 145,686 106,062  
Twelve months or greater, Fair value 36,708 1,520  
Total, Fair value 182,394 107,582  
Less than twelve months, Gross unrealized losses (875) (1,071)  
Twelve months or greater, Gross unrealized losses (413) (38)  
Total, Gross Unrealized Losses (1,288) (1,109)  
Proceeds from sale of securities available-for-sale 58,177 22,372 $ 30,464
Realized investment gains (losses) [Abstract]      
Gross gains 1,205 312 440
Gross losses (170) (57) (11)
Net (losses) gains 1,035 255 429
Investment securities pledged as collateral 243,382 206,322  
Available-for-Sale Debt Securities, Amortized Cost [Abstract]      
Due in one year or less 45,328    
Due after one year through five years 118,597    
Due after five years through ten years 31,687    
Due after ten years 59,418    
Total 255,030    
Available-for-Sale Debt Securities, Fair Value [Abstract]      
Due in one year or less 45,369    
Due after one year through five years 118,331    
Due after five years through ten years 31,676    
Due after ten years 59,315    
Total $ 254,691    
Minimum [Member]      
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]      
Duration securities impaired 1 year    
U.S. Agency Securities [Member]      
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]      
Amortized cost $ 99,454 170,276  
Gross Unrealized Gains 26 407  
Gross Unrealized Losses (593) (269)  
Fair value 98,887 170,414  
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]      
Less than twelve months, Fair value 74,952 50,947  
Twelve months or greater, Fair value 16,928 0  
Total, Fair value 91,880 50,947  
Less than twelve months, Gross unrealized losses (421) (269)  
Twelve months or greater, Gross unrealized losses (172) 0  
Total, Gross Unrealized Losses (593) (269)  
Realized investment gains (losses) [Abstract]      
Gross gains $ 23 72 $ 196
Gross losses   $ (22)  
Available-for-sale securities sold at a gross gain | Security 10 4 5
Available-for-sale securities sold at a gross loss | Security   4  
U.S. Treasuries [Member]      
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]      
Amortized cost $ 28,782 $ 2,999  
Gross Unrealized Gains 0 1  
Gross Unrealized Losses (178) 0  
Fair value 28,604 3,000  
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]      
Less than twelve months, Fair value 28,604    
Twelve months or greater, Fair value 0    
Total, Fair value 28,604    
Less than twelve months, Gross unrealized losses (178)    
Twelve months or greater, Gross unrealized losses 0    
Total, Gross Unrealized Losses (178)    
Realized investment gains (losses) [Abstract]      
Gross gains   $ 27  
Gross losses $ (170)   $ (11)
Available-for-sale securities sold at a gross gain | Security   2  
Available-for-sale securities sold at a gross loss | Security 14   1
Obligations of State and Political Subdivisions [Member]      
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]      
Amortized cost $ 78,409 $ 95,956  
Gross Unrealized Gains 820 1,463  
Gross Unrealized Losses (139) (493)  
Fair value 79,090 96,926  
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]      
Less than twelve months, Fair value 14,885 28,398  
Twelve months or greater, Fair value 5,958 767  
Total, Fair value 20,843 29,165  
Less than twelve months, Gross unrealized losses (85) (472)  
Twelve months or greater, Gross unrealized losses (54) (21)  
Total, Gross Unrealized Losses (139) (493)  
Realized investment gains (losses) [Abstract]      
Gross gains   $ 80 $ 99
Available-for-sale securities sold at a gross gain | Security   4 7
Interest-bearing Deposits [Member]      
Realized investment gains (losses) [Abstract]      
Gross gains $ 13    
Available-for-sale securities sold at a gross gain | Security 13    
Corporate Obligations [Member]      
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]      
Amortized cost $ 3,000 $ 3,000  
Gross Unrealized Gains 83 50  
Gross Unrealized Losses 0 0  
Fair value 3,083 3,050  
Realized investment gains (losses) [Abstract]      
Gross losses   $ (35)  
Available-for-sale securities sold at a gross loss | Security   6  
Mortgage-backed Securities in Government Sponsored Entities [Member]      
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]      
Amortized cost 45,385 $ 37,987  
Gross Unrealized Gains 19 88  
Gross Unrealized Losses (377) (347)  
Fair value 45,027 37,728  
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]      
Less than twelve months, Fair value 27,154 26,717  
Twelve months or greater, Fair value 13,822 753  
Total, Fair value 40,976 27,470  
Less than twelve months, Gross unrealized losses (190) (330)  
Twelve months or greater, Gross unrealized losses (187) (17)  
Total, Gross Unrealized Losses (377) (347)  
Realized investment gains (losses) [Abstract]      
Gross gains $ 20   $ 69
Available-for-sale securities sold at a gross gain | Security 1   5
Equity Securities in Financial Institutions [Member]      
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]      
Amortized cost $ 92 1,821  
Gross Unrealized Gains 0 1,078  
Gross Unrealized Losses (1) 0  
Fair value 91 2,899  
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]      
Less than twelve months, Fair value 91    
Twelve months or greater, Fair value 0    
Total, Fair value 91    
Less than twelve months, Gross unrealized losses (1)    
Twelve months or greater, Gross unrealized losses 0    
Total, Gross Unrealized Losses (1)    
Realized investment gains (losses) [Abstract]      
Gross gains $ 1,149 $ 133 $ 76
Available-for-sale securities sold at a gross gain | Security 5 3 1