Restructuring Activities (Tables)

12 Months Ended

Dec. 31, 2020

Restructuring and Related Activities [Abstract]

Changes in the Accrued Restructuring Liability

Changes in accrued restructuring expenses for the 2020 restructuring activities, which are included in Accrued liabilities on the Consolidated balance sheets, were as follows as of December 31, (in thousands):

	2020
	Employee Termination Benefits		Contract Terminations & Other		Non-Current Asset Adjustments		Total
Balance, beginning of period	$	—	$	—	$	—	$	—
Restructuring expense	28,913		70,894		30,202		130,009
Utilized – cash	(21,494)		(54,773)		—		(76,267)
Utilized – non cash	—		—		(30,202)		(30,202)
Foreign currency changes	305		75		—		380
Balance, end of period	$	7,724	$	16,196	$	—	$	23,920

The changes in accrued restructuring expenses during 2020 related to the 2018 restructuring activities were immaterial.

	2019
	Manufacturing Optimization Plan								Reorganization Plan
	Employee Termination Benefits		Accelerated Depreciation		Other		Total		Employee Termination Benefits		Total
Balance, beginning of period	$	24,958	$	—	$	79	$	25,037	$	3,461	$	28,498
Restructuring expense	15		14,684		17,971		32,670		(317)		32,353
Utilized - cash	(24,102)		—		(16,950)		(41,052)		(3,118)		(44,170)
Utilized - non cash	—		(14,684)		(1,094)		(15,778)		—		(15,778)
Foreign currency changes	(6)		—		(4)		(10)		(26)		(36)
Balance, end of period	$	865	$	—	$	2	$	867	$	—	$	867

	2018
	Manufacturing Optimization Plan								Reorganization Plan
	Employee Termination Benefits		Accelerated Depreciation		Other		Total		Employee Termination Benefits		Total
Balance, beginning of period	$	—	$	—	$	—	$	—	$	—	$	—
Restructuring expense	38,666		34,654		16,182		89,502		3,899		93,401
Utilized - cash	(13,060)		—		(16,095)		(29,155)		(444)		(29,599)
Utilized - non cash	—		(34,654)		—		(34,654)		—		(34,654)
Foreign currency changes	(648)		—		(8)		(656)		6		(650)
Balance, end of period	$	24,958	$	—	$	79	$	25,037	$	3,461	$	28,498