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SECURITIES - Narrative (Details)
$ in Millions
Dec. 31, 2017
USD ($)
position
security
Dec. 31, 2016
USD ($)
Schedule of Available-for-sale Securities [Line Items]    
Pledged Securities, carrying value | $ $ 403.3 $ 618.2
Debt Securities    
Schedule of Available-for-sale Securities [Line Items]    
Number of securities in security portfolio 418  
Number of securities in unrealized loss position 215  
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises    
Schedule of Available-for-sale Securities [Line Items]    
Number of securities in unrealized loss position 181  
State, county and municipal securities    
Schedule of Available-for-sale Securities [Line Items]    
Number of securities in unrealized loss position | position 24  
Corporate debt securities    
Schedule of Available-for-sale Securities [Line Items]    
Number of securities in unrealized loss position 10