v3.26.1
Fair Value Measurements (Details) - EBP 034 - USD ($)
Dec. 31, 2025
Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value $ 18,582,353 $ 16,285,119
Total    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 4,980,851 15,621,731
Total | Rayonier Advanced Materials Inc. Common Stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 545,884 832,759
Total | Mutual Funds and Money Market Funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 4,434,967 14,788,972
Level 1    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 4,980,851 15,621,731
Level 1 | Rayonier Advanced Materials Inc. Common Stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 545,884 832,759
Level 1 | Mutual Funds and Money Market Funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 4,434,967 14,788,972
Level 2    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 0 0
Level 2 | Rayonier Advanced Materials Inc. Common Stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 0 0
Level 2 | Mutual Funds and Money Market Funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 0 0
Level 3    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 0 0
Level 3 | Rayonier Advanced Materials Inc. Common Stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 0 0
Level 3 | Mutual Funds and Money Market Funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value 0 0
NAV | Collective Trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at Fair Value $ 13,601,502 $ 663,388