Senior Notes (Tables)

3 Months Ended

Mar. 31, 2012

Senior Notes [Abstract]

Schedule Of Carrying Amount Of Senior Notes

	March 31, 2012		December 31, 2011
	(Dollars in thousands)
5.375% Senior Notes due 2014	$	249,483	$	249,438
5.375% Senior Notes due 2015		249,866		249,857
5.625% Senior Notes due 2020		244,939		244,813
Total	$	744,288	$	744,108