Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2020

Accumulated Other Comprehensive Loss [Abstract]

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

	Postretirement		Foreign		Net Gain (Loss)
	Benefit Liability		Currency		on Cash Flow
(Dollars in thousands)	Adjustments		Items		Hedges		Total
Balance at December 31, 2017	$	1,165	$	(77,578)	$	945	$	(75,468)
Other comprehensive income (loss) before reclassifications, before tax		—		(24,658)		11,388		(13,270)
Reclassification to earnings:
Cash flow hedge gain (loss), before tax		—		—		(17,159)		(17,159)
Postretirement benefit liabilities gain (loss), before tax		(55)		—		—		(55)
Current period other comprehensive income (loss), before tax		(55)		(24,658)		(5,771)		(30,484)
Tax effect		(16)		954		(1,529)		(591)
Current period other comprehensive income (loss), net of tax		(39)		(25,612)		(4,242)		(29,893)
Balance at December 31, 2018	$	1,126	$	(103,190)	$	(3,297)	$	(105,361)
Other comprehensive income (loss) before reclassifications, before tax		—		6,269		(2,731)		3,538
Reclassification to earnings:
Cash flow hedge gain (loss), before tax		—		—		(10,162)		(10,162)
Postretirement benefit liabilities gain (loss), before tax		91		—		—		91
Current period other comprehensive income (loss), before tax		91		6,269		(12,893)		(6,533)
Tax effect		11		654		(3,183)		(2,518)
Current period other comprehensive income (loss), net of tax		80		5,615		(9,710)		(4,015)
Balance at December 31, 2019	$	1,206	$	(97,575)	$	(13,007)	$	(109,376)
Other comprehensive income (loss) before reclassifications, before tax		—		24,980		(34,689)		(9,709)
Reclassification to earnings:
Cash flow hedge gain (loss), before tax		—		—		22,465		22,465
Postretirement benefit liabilities gain (loss), before tax		2,146		—		—		2,146
Current period other comprehensive income (loss), before tax		2,146		24,980		(12,224)		14,902
Tax effect		153		(2,113)		(2,804)		(4,764)
Current period other comprehensive income (loss), net of tax		1,993		27,093		(9,420)		19,666
Balance at December 31, 2020	$	3,199	$	(70,482)	$	(22,427)	$	(89,710)