RETIREMENT PLANS (Tables)

12 Months Ended

Dec. 31, 2017

Retirement Benefits [Abstract]

Summary of Costs of Retirement Plans

Funding and administrative costs of the qualified noncontributory defined benefit retirement plan and 401(k) plan charged to salaries and employee benefits in the consolidated statements of income for the years ended December 31 were as follows (in thousands):

	2017		2016	2015
Qualified noncontributory defined benefit retirement plan	$	1,054	969	984
401(k) plan	374		359	346

Components of Net Benefit Costs

The components of net periodic pension cost of the nonqualified defined benefit retirement plan for the years ended December 31 are summarized as follows (in thousands):

	2017		2016	2015
Service cost	$	—	41	38
Interest cost	69		78	68
Amortization of unrecognized (gain) loss	16		168	171
Net periodic pension cost	$	85	287	277

Reconciliation of Changes in Projected Benefit Obligations

A reconciliation of changes in the projected benefit obligation of the nonqualified defined benefit retirement plan at December 31 follows (in thousands):

	2017			2016		2015
Projected benefit obligation at beginning of year	$	1,727		1,843		1,741
Service cost	—			41		38
Interest cost	69			78		68
Actuarial (gain) or loss	238			(209	)	10
Benefits paid	(63		)	(26	)	(14	)
Projected benefit obligation at end of year	$	1,971		1,727		1,843

Amount Recognized in OCI

Amounts recognized in accumulated other comprehensive income, net of tax, at December 31 for the nonqualified defined benefit retirement plan consists of (in thousands):

	2017		2016		2015
Net actuarial (gain)/loss	$	141	(16	)	233
Past service cost	—		—		—
	$	141	(16	)	233

Schedule of Key Assumptions Used

Key weighted-average assumptions used to determine the benefit obligation and net periodic pension costs for the nonqualified defined benefit retirement plan for the years ended December 31 were as follows:

	2017		2016		2015
Benefit obligation:
Discount rate	3.60	%	4.14	%	4.34	%
Salary increase rate	2.00	%	2.00	%	2.00	%
Net periodic pension cost:
Discount rate	4.14	%	4.34	%	3.95	%
Salary increase rate	2.00	%	2.00	%	2.00	%
Amortization period in years	1.00		1.00		1.98

Expected Benefit Payments

Estimated future benefit payments reflecting expected future service for the years ended after December 31, 2017 are (in thousands):

2018	$	130
2019	130
2020	130
2021	130
2022	130
2023-2027	633