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RECENT ACCOUNTING PRONOUNCEMENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Mar. 31, 2018
Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Other service charges and fees $ 3,286 $ 3,185 $ 9,697 $ 8,986    
Equity securities, at fair value 885   885     $ 825
Accumulated other comprehensive income (loss) (27,103)   (27,103)     $ (1,039)
Accounting Standards Update 2014-09 [Member]            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Other service charges and fees $ 200   $ 500      
Accounting Standards Update 2016-01 [Member]            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Accumulated other comprehensive income (loss)         $ 100  
Accounting Standards Update 2018-02 [Member]            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax         1,400  
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax         $ 500