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EMPLOYEE AND DIRECTOR BENEFIT PLANS EMPLOYEE AND DIRECTOR BENEFIT PLANS - Target Allocation of Plan Assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]    
Total plan assets $ 24,243 $ 0
Actual Allocation as of December 31, 2016 100.00%  
Long-Term Allocation Target 100.00%  
Equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Total plan assets $ 14,147  
Actual Allocation as of December 31, 2016 58.40%  
Long-Term Allocation Target, Minimum 40.00%  
Long-Term Allocation Target, Maximum 75.00%  
Debt securities    
Defined Benefit Plan Disclosure [Line Items]    
Total plan assets $ 10,096  
Actual Allocation as of December 31, 2016 41.60%  
Long-Term Allocation Target, Minimum 25.00%  
Long-Term Allocation Target, Maximum 60.00%