Debt And Other Financing Arrangements (Tables)

12 Months Ended

Dec. 31, 2012

Debt Disclosure [Abstract]

Long-Term Debt

(Dollars in thousands)	December 31,
	2012			2011
Promissory note, 2.63%, due 2016 (interest paid quarterly)	$	550		$	550
7.25% Senior Notes due 2018 (interest payable semi-annually)	425,000			425,000
6.70% Senior Debentures due 2034 (interest payable semi-annually)	300,000			300,000
Discount	(6,534		)	(6,664		)
	293,466			293,336
	719,016			718,886
Less current maturities	—			(550		)
Long-term debt	$	719,016		$	718,336