Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Schedule Of Defined Benefit Plans Disclosures Text Block

The components of net periodic benefit cost, included in other operating expenses on the condensed consolidated statements of income, for the three months ended March 31, 2019 and 2018 were as follows (dollars in thousands):

	Pension Benefits						Other Benefits
	Three months ended March 31,						Three months ended March 31,
	2019			2018			2019			2018
Service cost	$	3,138		$	2,654		$	757		$	636
Interest cost	1,386			1,330			580			530
Expected return on plan assets	(1,884		)	(1,554		)	—			—
Amortization of prior service cost (credit)	60			83			(329		)	(329		)
Amortization of prior actuarial losses	911			1,094			644			498
Net periodic benefit cost	$	3,611		$	3,607		$	1,652		$	1,335