Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule Of Defined Benefit Plans Disclosures Text Block

The components of net periodic benefit costs, included in other operating expenses on the condensed consolidated statements of income, for the three months ended March 31, 2017 and 2016 were as follows (dollars in thousands):

	Pension Benefits						Other Benefits
	Three months ended March 31,						Three months ended March 31,
	2017			2016			2017			2016
Service cost	$	2,580		$	2,306		$	721		$	1,016
Interest cost	1,198			1,259			565			643
Expected return on plan assets	(1,285		)	(1,224		)	—			—
Amortization of prior service cost	74			78			(156		)	—
Amortization of prior actuarial loss	1,081			857			457			616
Settlements	257			—			—			—
Net periodic benefit cost	$	3,905		$	3,276		$	1,587		$	2,275