Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Long-term Debt

Long-term debt at December 31 was as follows:

	2017		2016
	(Dollars in thousands)
Bank debt:
Bank revolving loans	$	—	$	99,500
U.S. term loans	800,000		310,250
Canadian term loans	27,147		44,274
Euro term loans	—		196,668
Other foreign bank revolving and term loans	76,798		120,500
Total bank debt	903,945		771,192
5% Senior Notes	280,000		500,000
5½% Senior Notes	300,000		300,000
4¾% Senior Notes	300,000		—
3¼% Senior Notes	780,325		—
Total debt - principal	2,564,270		1,571,192
Less unamortized debt issuance costs	16,979		9,609
Total debt	2,547,291		1,561,583
Less current portion	108,789		217,127
	$	2,438,502	$	1,344,456

Aggregate Annual Maturities of Debt

The aggregate annual maturities of our debt (non-U.S. dollar debt has been translated into U.S. dollars at exchange rates in effect at the balance sheet date) are as follows (dollars in thousands):

2018	$	108,789
2019	86,509
2020	361,501
2021	83,620
2022	383,620
Thereafter	1,540,231
	$	2,564,270

Redemption Price of Notes Plus Accrued and Unpaid Interest Thereon to Redemption Date