Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Long-term Debt

Long-term debt consisted of the following:

	March 31, 2018		March 31, 2017		Dec. 31, 2017
	(Dollars in thousands)
Bank debt
Bank revolving loans	$	415,000	$	319,510	$	—
U.S. term loans	800,000		—		800,000
Canadian term loans	23,362		34,166		27,147
Other foreign bank revolving and term loans	30,135		46,507		76,798
Total bank debt	1,268,497		400,183		903,945
5% Senior Notes	280,000		500,000		280,000
5½% Senior Notes	300,000		300,000		300,000
4¾% Senior Notes	300,000		300,000		300,000
3¼% Senior Notes	801,060		692,380		780,325
Total debt - principal	2,949,557		2,192,563		2,564,270
Less unamortized debt issuance costs	16,196		20,552		16,979
Total debt	2,933,361		2,172,011		2,547,291
Less current portion	758,652		580,247		108,789
	$	2,174,709	$	1,591,764	$	2,438,502