Supplemental Financial Information (Tables)

6 Months Ended

Jun. 30, 2021

Supplemental Income Statement Elements [Abstract]

Schedule of Restructuring and Impairment Charges

The components of “Restructuring and impairment charges” line item in the condensed consolidated statements of operations, which contains restructuring charges and related expenses, as well as impairment charges, were as follows:

	Three Months Ended				Six Months Ended
(Dollars in thousands)	June 30, 2021		June 30, 2020		June 30, 2021		June 30, 2020
Restructuring charges
Manufacturing footprint optimization	747		—		2,253		—
Total restructuring charges	747		—		2,253		—
Total restructuring and impairment charges	$	747	$	—	$	2,253	$	—

Schedule of Severance Activity

Severance and related benefits activity related to the manufacturing footprint optimization plan is presented in the table below for the six months ended June 30, 2021:

(Dollars in thousands)	Manufacturing Footprint Optimization Restructuring Severance
Balance as of December 31, 2020	$	11,003
Provisions	113
Payments	(6,902)
Foreign currency translation adjustment	(312)
Balance as of June 30, 2021	$	3,902

Schedule of Other Operating (Income) Expense

The components of “Other operating (income) expense, net” line item in the condensed consolidated statements of operations, were as follows:

	Three Months Ended				Six Months Ended
(Dollars in thousands)	June 30, 2021		June 30, 2020		June 30, 2021		June 30, 2020
UTIS fire
Fixed assets write-offs	—		—		891		—
Inventory charges	40		—		320		—
Professional services	1,072		—		1,594		—
Lease obligations	54		—		540		—
Compensation & benefits	600		—		844		—
Other	76		—		76		—
Insurance recoveries	(359)		—		(1,478)		—
Total UTIS fire	1,483		—		2,787		—
(Gain) loss on sale or disposal of property, plant and equipment	(593)		33		(682)		53
Economic incentive grants	—		(145)		—		(145)
Total other operating (income) expense, net	$	890	$	(112)	$	2,105	$	(92)

Interest Income and Interest Expense Disclosure

The components of “Interest expense, net” line item in the condensed consolidated statements of operations, were as follows:

	Three Months Ended				Six Months Ended
(Dollars in thousands)	June 30, 2021		June 30, 2020		June 30, 2021		June 30, 2020
Interest on revolving credit facility	$	5	$	1,388	$	106	$	2,467
Interest rate swap settlements	—		336		—		422
Line of credit fees	291		152		564		318
Debt issuance amortization costs	179		138		358		276
Interest on finance leases	47		32		259		65
Interest income	(150)		(269)		(345)		(589)
Other	32		2		69		27
Total interest expense, net	$	404	$	1,779	$	1,011	$	2,986