Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2017

Pension

Employee Benefit Plans

Schedule of components of benefit costs (income)

The following provides the components of benefit costs (income) for the applicable periods (dollars in thousands):

Pension

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
Interest cost	$	1,719	$	1,996	$	3,500	$	3,992
Expected asset return		(2,573)		(2,678)		(5,228)		(5,355)
Amortization of loss		116		129		241		257
Net periodic benefit income		(738)		(553)		(1,487)		(1,106)
Settlement loss		314		—		2,270		—
Total benefit (income) expense	$	(424)	$	(553)	$	783	$	(1,106)

Other Postretirement Benefits

Employee Benefit Plans

Schedule of components of benefit costs (income)

Other Postretirement Benefits

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
Service cost	$	215	$	259	$	468	$	518
Interest cost		532		655		1,128		1,310
Amortization of (gain) loss		(213)		119		(251)		237
Total benefit expense	$	534	$	1,033	$	1,345	$	2,065