Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2013

Investments, All Other Investments [Abstract]

Summary of Carrying Amounts and Estimated Fair Values of Other Financial Instruments

The following table summarizes the carrying amounts and estimated fair values of our other financial instruments at September 30, 2013:

	Carrying Amount		Fair Value
	(Dollars in thousands)
Assets:
Cash and cash equivalents	$	134,473	$	134,473
Liabilities:
Bank debt	$	999,928	$	999,928
5% Notes	500,000		498,700
5½% Notes	300,000		292,314
Interest rate swap agreements	8,187		8,187
Natural gas swap agreements	272		272