Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2019

Retirement Benefits [Abstract]

Summary Of Net Periodic Benefit Cost

Pension Benefits	Three Months Ended						Six Months Ended
	June 30,						June 30,
(Dollars in thousands)	2019			2018			2019			2018
Service cost	$	2,276		$	2,977		$	4,553		$	5,954
Interest cost		2,930			2,585			5,860			5,170
Expected return on plan assets		(5,016	)		(3,670	)		(10,031	)		(7,341	)
Amortization of net (income) loss		1,601			2,237			3,203			4,473
FAS 88 settlement charge		104			-			208			-
Net periodic benefit cost	$	1,895		$	4,129		$	3,793		$	8,256

Other Benefits	Three Months Ended						Six Months Ended
	June 30,						June 30,
(Dollars in thousands)	2019			2018			2019			2018
Service cost	$	286		$	446		$	573		$	893
Interest cost		295			307			590			614
Amortization of prior service cost		(144	)		(33	)		(289	)		(66	)
Amortization of net (income) loss		-			94			-			188
Net periodic benefit cost	$	437		$	814		$	874		$	1,629
(Some amounts may not reconcile due to rounding.)