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EMPLOYEE BENEFIT PLANS | 9 Months Ended
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Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract] |
EMPLOYEE BENEFIT PLANS | EMPLOYEE BENEFIT PLANS The Company sponsors unfunded, non-qualified SERPs for certain officers and provides medical and life insurance to certain eligible retired employees. The components of net period benefit cost for the periods ended September 30, 2017 and 2016 were as follows: Supplemental Executive Retirement Plan:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
Net periodic benefit cost |  | 2017 |  | 2016 |  | 2017 |  | 2016
Service cost |  | $ | 84 |  |  | $ | 77 |  |  | $ | 252 |  |  | $ | 231 |
Interest cost |  | 113 |  |  | 108 |  |  | 339 |  |  | 324 |
Recognized net actuarial loss |  | 61 |  |  | 55 |  |  | 185 |  |  | 165 |
Recognized prior service cost |  | — |  |  | 2 |  |  | — |  |  | 6 |
Net period benefit cost(1) |  | $ | 258 |  |  | $ | 242 |  |  | $ | 776 |  |  | $ | 726 |
(1) | Presented within the consolidated statements of income within salaries and employee benefits.
Other Postretirement Benefit Plan:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
Net periodic benefit cost |  | 2017 |  | 2016 |  | 2017 |  | 2016
Service cost |  | $ | 13 |  |  | $ | 15 |  |  | $ | 39 |  |  | $ | 45 |
Interest cost |  | 36 |  |  | 38 |  |  | 108 |  |  | 114 |
Recognized net actuarial loss |  | 10 |  |  | 8 |  |  | 30 |  |  | 24 |
Amortization of prior service credit |  | (6 | ) |  | (6 | ) |  | (18 | ) |  | (18 | )
Net period benefit cost(1) |  | $ | 53 |  |  | $ | 55 |  |  | $ | 159 |  |  | $ | 165 |
(1) | Presented within the consolidated statements of income within salaries and employee benefits.

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