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EMPLOYEE BENEFIT PLANS
 6 Months Ended
Jun. 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 June 30, 2017 and 2016 were as follows:
Supplemental Executive Retirement Plan:
 
 
Three Months Ended 
 June 30,
 
Six Months Ended June 30,
Net periodic benefit cost
 
2017
 
2016
 
2017
 
2016
Service cost
 
$
84

 
$
77

 
$
168

 
$
154

Interest cost
 
113

 
108

 
226

 
216

Recognized net actuarial loss
 
62

 
55

 
124

 
110

Recognized prior service cost
 
—

 
2

 
—

 
4

Net period benefit cost(1)
 
$
259

 
$
242

 
$
518

 
$
484

(1)
Presented within the consolidated statements of income within salaries and employee benefits.
 
Other Postretirement Benefit Plan:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
Net periodic benefit cost
 
2017
 
2016
 
2017
 
2016
Service cost
 
$
13

 
$
15

 
$
26

 
$
30

Interest cost
 
36

 
38

 
72

 
76

Recognized net actuarial loss
 
10

 
8

 
20

 
16

Amortization of prior service credit
 
(6
)
 
(6
)
 
(12
)
 
(12
)
Net period benefit cost(1)
 
$
53

 
$
55

 
$
106

 
$
110

(1)
Presented within the consolidated statements of income within salaries and employee benefits.