Senior Notes (Tables)

9 Months Ended

Sep. 30, 2015

Senior Notes [Abstract]

Schedule Of Outstanding Senior Notes

					September 30, 2015				December 31, 2014
					Consolidated Balance				Consolidated Balance
(Dollars in thousands)	Date Issued	Date Due	Principal Amounts		Sheet Amount		Market Value		Sheet Amount		Market Value
4.868% Senior notes	06/05/2014	06/01/2044	$	400,000	$	400,000	$	388,768	$	400,000	$	404,892
5.40% Senior notes	10/12/2004	10/15/2014		250,000		-		-		-		-

Schedule Of Interest Expense Incurred In Connection With Senior Notes

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(Dollars in thousands)	2015		2014		2015		2014
Interest expense incurred	$	4,868	$	8,256	$	14,604	$	16,385