Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2018

Accumulated Other Comprehensive Loss [Abstract]

Changes In Accumulated Other Comprehensive (Loss) Income By Component, Net Of Tax

	Three Months Ended June 30,
		Postretirement					Net Gain
		Benefit Liability		Translation			on Cash
		Adjustments		Adjustments			Flow Hedges	Total
		(Dollars in thousands)
Balances at March 31, 2017		$	1,137	$	(100,613)	$	—	$	(99,476)
Other comprehensive income before reclassifications, before tax			—		13,790		—		13,790
Reclassification to earnings:
Postretirement benefit liabilities loss, before tax			18		—		—		18
Current period other comprehensive (loss) income, before tax			18		13,790		—		13,808
Tax effect			2		—		—		2
Current period other comprehensive income (loss), net of tax			16		13,790		—		13,806
Balances at June 30, 2017		$	1,153	$	(86,823)	$	—	$	(85,670)
Balances at March 31, 2018		$	1,172	$	(71,919)	$	2,259	$	(68,488)
Other comprehensive (loss) income before reclassifications, before tax			—		(29,482)		10,256		(19,226)
Reclassification to earnings:
Postretirement benefit liabilities income, before tax			6		—		—		6
Cash flow hedge income, before tax			—		—		(11,823)		(11,823)
Current period other comprehensive income (loss), before tax			6		(29,482)		(1,567)		(31,043)
Tax effect			(4)		526		(231)		291
Current period other comprehensive (loss) income, net of tax			10		(30,008)		(1,336)		(31,334)
Balances at June 30, 2018		$	1,182	$	(101,927)	$	923	$	(99,822)

	Six Months Ended June 30,
		Postretirement					Net Gain
		Benefit Liability		Translation			on Cash
		Adjustments		Adjustments			Flow Hedges	Total
		(Dollars in thousands)
Balances at December 31, 2016		$	1,141	$	(107,784)	$	—	$	(106,643)
Other comprehensive income before reclassifications, before tax			—		20,961		—		20,961
Reclassification to earnings:
Postretirement benefit liabilities loss, before tax			9		—		—		9
Current period other comprehensive (loss) income, before tax			9		20,961		—		20,970
Tax effect			(3)		—		—		(3)
Current period other comprehensive income, net of tax			12		20,961		—		20,973
Balances at June 30, 2017		$	1,153	$	(86,823)	$	—	$	(85,670)
Balances at December 31, 2017		$	1,165	$	(77,578)	$	945	$	(75,468)
Other comprehensive (loss) income before reclassifications, before tax			—		(24,021)		11,829		(12,192)
Reclassification to earnings:
Postretirement benefit liabilities income, before tax			22		—		—		22
Cash flow hedge income, before tax			—		—		(11,687)		(11,687)
Current period other comprehensive income (loss), before tax			22		(24,021)		142		(23,857)
Tax effect			5		328		164		497
Current period other comprehensive income (loss), net of tax			17		(24,349)		(22)		(24,354)
Balances at June 30, 2018		$	1,182	$	(101,927)	$	923	$	(99,822)