Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2017

Supplemental Cash Flow Elements [Abstract]

Components of Change in Other Assets and Liabilities, Net

The components of the change in other assets and liabilities, net, are as follows:

	Six Months Ended
	June 30,
	2017			2016
	(Dollars in Thousands)
Other current and noncurrent assets	$	(32,332	)	$	(9,691	)
Accrued salaries, benefits and payroll taxes		(7,892	)		(7,808	)
Accrued insurance and other taxes		(134	)		(256	)
Accrued income taxes		28,047			(8,495	)
Accrued pension, postretirement and postemployment benefits		11,521			11,757
Other current and noncurrent liabilities		30,740			(5,477	)
	$	29,950		$	(19,970	)

Schedule Of Noncash Investing and Financing Activities

Noncash investing and financing activities are as follows:

	Six Months Ended
	June 30,
	2017		2016
	(Dollars in Thousands)
Noncash investing and financing activities:
Accrued liabilities for purchases of property, plant and equipment	$	34,714	$	33,959
Acquisition of assets through capital lease	$	149	$	—
Settlement of royalty obligation via asset sale	$	900	$	—

Supplemental Disclosures of Cash Flow Information

Supplemental disclosures of cash flow information are as follows:

	Six Months Ended
	June 30,
	2017		2016
	(Dollars in Thousands)
Cash paid for interest	$	38,111	$	36,630
Cash paid for income taxes	$	33,264	$	47,159