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SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE AND OTHER DEBT - Narrative (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Line of Credit Facility [Line Items]    
Securities sold under agreements to repurchase $ 11,542,000 $ 12,228,000
Revolving Credit Facility    
Line of Credit Facility [Line Items]    
Line of credit facility, current borrowing capacity 25,000,000  
Long-term line of credit $ 0