v3.26.1
Fair Value Measurements (Details) - Trustmark 401(k) Plan [Member] - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Level 2 [Member]    
Fair Value Measurements [Abstract]    
Investments $ 0 $ 0
Level 3 [Member]    
Fair Value Measurements [Abstract]    
Investments $ 0 $ 0