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Supplemental Financial Information (Tables)
 9 Months Ended
Sep. 30, 2022
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 EndedNine Months Ended
(Dollars in thousands)September 30, 2022September 30, 2021September 30, 2022September 30, 2021
Restructuring charges
Manufacturing footprint optimization$373 $622 $907 $2,875 
Total restructuring charges373 622 907 2,875 
Impairment charges
Fixed asset impairment charges— 385 212 385 
Total impairment charges— 385 212 385 
Total restructuring and impairment charges$373 $1,007 $1,119 $3,260 
Schedule of Severance Activity Severance and related benefits activity related to the manufacturing footprint optimization plan is presented in the table below for the nine months ended September 30, 2022:
(Dollars in thousands)Manufacturing Footprint Optimization Restructuring Severance
Balance as of December 31, 2021$1,395 
Provisions363 
Payments(1,479)
Foreign currency translation adjustment(111)
Balance as of September 30, 2022$168 
Schedule of Other Operating (Income) Expense
The components of “Other operating (income) expense, net” line item in the condensed consolidated statements of operations, were as follows:
Three Months EndedNine Months Ended
(Dollars in thousands)September 30, 2022September 30, 2021September 30, 2022September 30, 2021
UTIS fire
Fixed assets write-offs$— $— $— $891 
Inventory charges(1)43 199 363 
Professional services369 577 1,295 2,171 
Lease obligations91 60 369 600 
Lease impairments— 495 — 495 
Compensation & benefits562 614 1,931 1,458 
Third-party property claims— 4,650 — 4,650 
Other2 — 15 76 
Insurance recoveries(1,604)(5,017)(6,646)(6,495)
Total UTIS fire(581)1,422 (2,837)4,209 
(Gain) loss on sale or disposal of property, plant and equipment3 9 (15)(673)
Total other operating (income) expense, net$(578)$1,431 $(2,852)$3,536 
Schedule of Components of Interest Expense, Net
The components of “Interest expense, net” line item in the condensed consolidated statements of operations, were as follows:
Three Months EndedNine Months Ended
(Dollars in thousands)September 30, 2022September 30, 2021September 30, 2022September 30, 2021
Interest on revolving credit facility$2,831 $— $5,014 $106 
Line of credit fees118 292 409 856 
Debt issuance amortization costs178 178 536 536 
Interest income(175)(64)(462)(409)
Other(10)35 62 363 
Total interest expense, net$2,942 $441 $5,559 $1,452