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INTEREST RATE SWAPS - NON-HEDGE (Details) - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Information about derivatives and swaps    
Fair value of investment securities pledged as collateral $ 224,978,000 $ 231,891,000
Counterparty    
Information about derivatives and swaps    
Fair value of investment securities pledged as collateral 800,000 1,800,000
Counterparty | Minimum    
Information about derivatives and swaps    
Net loss position in which pledged securities as collateral are required 250,000  
Interest rate swap | Non-Hedge    
Information about derivatives and swaps    
Notional amount 63,106,000 63,106,000
Fair Value   101,000
Interest rate swap | Non-Hedge | Bank Clients    
Information about derivatives and swaps    
Notional amount 31,553,000 31,553,000
Fair Value 49,000 156,000
Interest rate swap | Non-Hedge | Counterparty    
Information about derivatives and swaps    
Notional amount 31,553,000 31,553,000
Fair Value $ (49,000) $ (55,000)