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SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE AND OTHER DEBT - Narrative (Details)
Mar. 31, 2017
USD ($)
debt_instrument
Dec. 31, 2016
USD ($)
Line of Credit Facility [Line Items]    
Securities sold under agreements to repurchase $ 12,663,000 $ 10,859,000
Line of Credit | Unsecured Line of Credit    
Line of Credit Facility [Line Items]    
Number of debt instruments | debt_instrument 1  
Maximum borrowing capacity $ 25,000,000  
Outstanding balance $ 18,929,000  
Line of Credit | Unsecured Line of Credit | Prime Rate    
Line of Credit Facility [Line Items]    
Spread on variable rate 0.50%