Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2018

Retirement Plans

Schedule of components of net periodic pension expense

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(Dollars in thousands)	2018		2017		2018		2017
Interest cost	$	270	$	281	$	540	$	562
Service cost		19		31		39		63
Expected return on plan assets		(582)		(553)		(1,164)		(1,107)
Recognized net actuarial loss		194		188		387		376
Net periodic pension benefit	$	(99)	$	(53)	$	(198)	$	(106)