Quarterly report pursuant to Section 13 or 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Narrative) (Details)

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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Narrative) (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Jun. 30, 2015
Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Gains on securities transactions, net $ 481,000 $ 143,000    
Tax expense (benefit) related to (gains) losses on the sale of securities 168,000 50,000    
Transfer from securities available for sale to securities held to maturity     $ 201,800,000  
Held to maturity securities unrealized gains before tax 4,800,000   $ 8,100,000 $ 5,200,000
Accretion expense (283,000) (449,000)    
Tax expense (benefit) related to (gains) losses for AFS securities transferred to HTM 99,000 157,000    
Tax expense (benefit) related to (gains) losses on the cash flow hedges (97,000) (76,000)    
Reclassification adjustment for losses (gains) included in net income 208,000 (48,000)    
Cash Flow Hedges | Interest Expense, Net        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other comprehensive income (loss), reclassification adjustment from AOCI on derivatives, before tax 277,000 217,000    
Unrealized Gains (Losses) on BOLI        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Reclassification adjustment for losses (gains) included in net income $ (109,000) $ 0