v3.26.1
Shareholder Report, Line Graph (Details) - USD ($)
1 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
MATTHEW 25 FUND                      
Account Value [Line Items]                      
Accumulated Value $ 38,190 $ 31,358 $ 25,267 $ 20,551 $ 18,414 $ 23,253 $ 15,225 $ 16,118 $ 14,768 $ 13,037 $ 10,000
S&P 500 Index                      
Account Value [Line Items]                      
Accumulated Value $ 42,275 $ 34,560 $ 30,009 $ 24,093 $ 20,146 $ 22,538 $ 16,008 $ 14,890 $ 13,484 $ 11,789 $ 10,000