v3.26.1
RELATED PARTY AND PARTY IN INTEREST TRANSACTIONS (Details) - EBP 002 - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
EBP, Related Party And Party-in-Interest Transactions [Roll Forward]    
Balance, January 1 $ 133,919,803  
Net appreciation (depreciation) in fair value 17,673,583 $ 13,689,410
Balance, December 31 155,157,331 133,919,803
Tredegar Corporation common stock    
EBP, Related Party And Party-in-Interest Transactions [Roll Forward]    
Balance, January 1 4,915,044 3,800,985
Distributions and sales (530,041) (358,514)
Net appreciation (depreciation) in fair value (259,231) 1,472,573
Balance, December 31 $ 4,125,772 $ 4,915,044