Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [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 significant financial instruments at December 31:

	2019				2018
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(Dollars in thousands)
Assets:
Cash and cash equivalents	$	203,824	$	203,824	$	72,819	$	72,819
Liabilities:
Bank debt	$	795,830	$	795,830	$	951,800	$	951,800
4¾% Notes	300,000		308,217		300,000		284,517
3¼% Notes	729,755		748,349		744,380		746,591
4⅛% Notes	400,000		401,848		—		—