Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Long-term Debt

Long-term debt consisted of the following:

	Sept. 30, 2018		Sept. 30, 2017		Dec. 31, 2017
	(Dollars in thousands)
Bank debt
Bank revolving loans	$	698,000	$	598,751	$	—
U.S. term loans	800,000		800,000		800,000
Canadian term loans	23,335		27,365		27,147
Other foreign bank revolving and term loans	36,143		49,596		76,798
Total bank debt	1,557,478		1,475,712		903,945
5% Senior Notes	—		280,000		280,000
5½% Senior Notes	300,000		300,000		300,000
4¾% Senior Notes	300,000		300,000		300,000
3¼% Senior Notes	754,260		767,910		780,325
Other obligations	21,950		—		—
Total debt - principal	2,933,688		3,123,622		2,564,270
Less unamortized debt issuance costs	14,009		17,452		16,979
Total debt	2,919,679		3,106,170		2,547,291
Less current portion	733,404		640,390		108,789
	$	2,186,275	$	2,465,780	$	2,438,502