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Segment Reporting - Additional Information (Details)
$ in Thousands
 9 Months Ended
Oct. 01, 2023
USD ($)
segment
Dec. 31, 2022
USD ($)
 [1]
Segment Reporting Information [Line Items]    
Number of reportable segments | segment 2  
Total assets $ 7,269,999 $ 7,052,940
Industrial Paper Packaging | RTS Packaging and Chattanooga Mill    
Segment Reporting Information [Line Items]    
Total assets $ 364,566  
[1] The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America (the “United States” or “U.S.”).