Annual report pursuant to Section 13 and 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
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Equity [Abstract]          
Reclassifications of unrealized gains (losses) on AFS     $ 205,000 $ 1,486,000 $ 1,695,000
OTTI recovery amount   $ 400,000     400,000
Net gain (loss) on sale of securities, excluding OTTI recovery         1,300,000
Tax expense (benefit) related to (gains) losses on the sale of securities     72,000 415,000 453,000
Transfer from securities available for sale to securities held to maturity $ 201,800,000   0 201,822,000 0
Held to maturity securities unrealized gains before tax $ 8,100,000   5,200,000 6,800,000  
Accretion expense     1,600,000 1,300,000  
Tax expense (benefit) related to (gains) losses for AFS securities transferred to HTM     (568,000) (441,000) 0
Reclassification of unrealized gains (losses) on cash flow hedges     782,000 956,000 909,000
Tax expense (benefit) related to (gains) losses on the cash flow hedges     (274,000) (335,000) (318,000)
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Reclassification adjustment for losses (gains) included in net income     (417,000) $ (969,000) $ (251,000)
Unrealized Gains (Losses) on BOLI          
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Reclassification adjustment for losses (gains) included in net income     $ 263,000