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RECENT ACCOUNTING PRONOUNCEMENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Other service charges and fees $ 3,034 $ 2,748  
Equity securities, at fair value 753   $ 825
Accumulated other comprehensive income (loss) (17,729)   $ (1,039)
Accounting Standards Update 2014-09 [Member]      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Other service charges and fees 100    
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