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EMPLOYEE BENEFIT PLANS (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Supplemental Executive Retirement Plan        
Net periodic benefit cost        
Service cost $ 77 $ 77 $ 154 $ 154
Interest cost 108 106 216 212
Recognized net actuarial loss 55 54 110 108
Recognized prior service cost 2 5 4 10
Net period benefit cost [1] 242 242 484 484
Other Postretirement Benefit Plan        
Net periodic benefit cost        
Service cost 15 15 30 30
Interest cost 38 29 76 58
Recognized net actuarial loss 8 6 16 12
Recognized prior service cost (6) (6) (12) (12)
Net period benefit cost [1] $ 55 $ 44 $ 110 $ 88
[1] (1) Presented within the consolidated statements of income within salaries and employee benefits.