Shareholder Report, Line Graph (Details) - USD ($) |
6 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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 |
Jun. 30, 2025 |
|
| Monetta Fund | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Monetta Fund | ||||||||||
| Accumulated Value | $ 28,914 | $ 22,569 | $ 17,190 | $ 23,852 | $ 20,242 | $ 15,642 | $ 12,192 | $ 12,615 | $ 10,584 | $ 9,894 | $ 33,712 |
| Monetta Young Investor Growth Fund | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Monetta Young Investor Growth Fund | ||||||||||
| Accumulated Value | 31,461 | 24,650 | 18,570 | 25,024 | 20,366 | 16,905 | 12,751 | 13,464 | 10,937 | 9,928 | $ 33,266 |
| S&P 500 Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | ||||||||||
| Accumulated Value | 33,837 | 27,066 | 21,432 | 26,172 | 20,334 | 17,175 | 13,062 | 13,661 | 11,213 | 10,015 | $ 35,936 |
| S&P 500 Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | ||||||||||
| Accumulated Value | $ 33,837 | $ 27,066 | $ 21,432 | $ 26,172 | $ 20,334 | $ 17,175 | $ 13,062 | $ 13,661 | $ 11,213 | $ 10,015 | $ 35,936 |