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SECURITIES AVAILABLE FOR SALE - Basis for Impairment Conclusion (Details)
6 Months Ended
Jun. 30, 2020
security
US Government-sponsored enterprises  
Investment Holdings [Line Items]  
Available-for-sale, securities in unrealized loss positions (security) 42
Available for sale securities portfolio, number of securities (security) 618
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (percentage) 0.98%
US Government agency  
Investment Holdings [Line Items]  
Available-for-sale, securities in unrealized loss positions (security) 12
Available for sale securities portfolio, number of securities (security) 170
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (percentage) 1.21%
Private label  
Investment Holdings [Line Items]  
Available-for-sale, securities in unrealized loss positions (security) 11
Available for sale securities portfolio, number of securities (security) 18
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (percentage) 4.34%
Obligations of states and political subdivisions thereof  
Investment Holdings [Line Items]  
Available-for-sale, securities in unrealized loss positions (security) 3
Available for sale securities portfolio, number of securities (security) 190
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (percentage) 0.25%
Corporate bonds  
Investment Holdings [Line Items]  
Available-for-sale, securities in unrealized loss positions (security) 16
Available for sale securities portfolio, number of securities (security) 33
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses (percentage) 4.89%