Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2018

Retirement Benefits [Abstract]

Schedule of Benefit Obligation

The benefit obligation at December 31, 2018 and December 31, 2017 was calculated as follows:

	2018			2017
	(Dollars in thousands)
Benefit obligation, January 1	$	4,901		$	4,029
Service cost	417			650
Interest cost	268			222
Benefits paid	(65		)	—
Accrued liability at December 31	$	5,521		$	4,901

Schedule of Net Periodic Pension Cost

The net periodic SERP pension cost for 2018 and 2017 was calculated as follows:

	2018		2017
	(Dollars in thousands)
Service cost	$	417	$	650
Interest cost	268		222
	$	685	$	872