Shareholder Report |
6 Months Ended |
---|---|
Jun. 30, 2025
USD ($)
Holding
| |
Shareholder Report [Line Items] | |
Document Type | N-CSRS |
Amendment Flag | false |
Registrant Name | FORUM FUNDS |
Entity Central Index Key | 0000315774 |
Entity Investment Company Type | N-1A |
Document Period End Date | Jun. 30, 2025 |
C000012485 | |
Shareholder Report [Line Items] | |
Fund Name | Lisanti Small Cap Growth Fund |
Trading Symbol | ASCGX |
Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Lisanti Small Cap Growth Fund for the period of January 1, 2025, to June 30, 2025. |
Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
Additional Information [Text Block] | This semi-annual shareholder report contains important information about the Lisanti Small Cap Growth Fund for the period of January 1, 2025, to June 30, 2025. You can find additional information about the Fund at https://lisantismallcap.com/investing-in-the-fund. You can also request this information by contacting us at (800) 441-7031. |
Additional Information Phone Number | (800) 441-7031 |
Additional Information Website | https://lisantismallcap.com/investing-in-the-fund |
Expenses [Text Block] | |
Expenses Paid, Amount | $ 74 |
Expense Ratio, Percent | 1.52% |
Factors Affecting Performance [Text Block] | |
Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
Line Graph [Table Text Block] | ![]() |
Average Annual Return [Table Text Block] | |
No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. |
Performance Table Market Index Changed [Text Block] | Effective May 1, 2024, the Fund changed its primary benchmark from the Russell 2000 Growth Index to the Russell 2000 Index due to regulatory requirements. The Fund retained the Russell 2000 Growth Index as a secondary benchmark because the Russell 2000 Growth Index more closely aligns with the Fund’s investment strategies and investment restrictions. |
Prior Market Index Comparison [Text Block] | The Fund retained the Russell 2000 Growth Index as a secondary benchmark |
Updated Performance Information Location [Text Block] | |
AssetsNet | $ 16,833,230 |
Holdings Count | Holding | 93 |
Advisory Fees Paid, Amount | $ 19,121 |
InvestmentCompanyPortfolioTurnover | 200.00% |
Additional Fund Statistics [Text Block] | |
Holdings [Text Block] | |
Largest Holdings [Text Block] |