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Debt (Tables)
 12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Summary of long-term debt
Long-term debt in the Consolidated Balance Sheets is summarized as follows:
 December 31,
(Thousands)20212020
Borrowings under Credit Agreement with average interest rate of 2.12% at December 31, 2021
$152,296 $34,000 
Borrowings under the Term Loan Facility300,000 — 
Foreign debt2,252 3,157 
Fixed rate industrial development revenue bonds— 1,322 
Total long-term debt outstanding454,548 38,479 
Current portion of long-term debt(15,359)(1,937)
Gross long-term debt$439,189 $36,542 
Unamortized deferred financing fees(4,801)— 
Long-term debt$434,388 $36,542 
Maturities on long-term debt instruments
Maturities on long-term debt instruments as of December 31, 2021 are as follows:
(Thousands)
2022$15,359 
202315,359 
202430,359 
202530,359 
2026362,620 
2027 and thereafter 492 
Total$454,548