Shareholder Report, Line Graph (Details) - USD ($) |
1 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| MATTHEW 25 FUND | |||||||||||
| Account Value [Line Items] | |||||||||||
| Accumulated Value | $ 35,998 | $ 30,390 | $ 23,857 | $ 17,485 | $ 25,007 | $ 20,452 | $ 18,115 | $ 12,745 | $ 15,825 | $ 12,692 | $ 10,000 |
| S P 500 Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Accumulated Value | $ 39,831 | $ 33,790 | $ 27,028 | $ 21,402 | $ 26,135 | $ 20,306 | $ 17,150 | $ 13,042 | $ 13,640 | $ 11,196 | $ 10,000 |