Class A Class C and Investor Class [Member] Annual Fund Operating Expenses - Class A, Class C and Investor Class - Meridian Small Cap Growth Fund |
Jun. 30, 2026 |
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| Prospectus [Line Items] | ||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | one year after the date of this prospectus | |||||||
| Investor Class | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 1.00% | |||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||
| Other Expenses (as a percentage of Assets): | 0.33% | |||||||
| Acquired Fund Fees and Expenses | 0.01% | |||||||
| Expenses (as a percentage of Assets) | 1.34% | [1] | ||||||
| Fee Waiver or Reimbursement | (0.08%) | |||||||
| Net Expenses (as a percentage of Assets) | 1.26% | [2],[3] | ||||||
| Class A | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 1.00% | |||||||
| Distribution and Service (12b-1) Fees | 0.25% | |||||||
| Other Expenses (as a percentage of Assets): | 0.36% | |||||||
| Acquired Fund Fees and Expenses | 0.01% | |||||||
| Expenses (as a percentage of Assets) | 1.62% | [1] | ||||||
| Fee Waiver or Reimbursement | (0.11%) | |||||||
| Net Expenses (as a percentage of Assets) | 1.51% | [2],[3] | ||||||
| Class C | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 1.00% | |||||||
| Distribution and Service (12b-1) Fees | 1.00% | |||||||
| Other Expenses (as a percentage of Assets): | 0.32% | |||||||
| Acquired Fund Fees and Expenses | 0.01% | |||||||
| Expenses (as a percentage of Assets) | 2.33% | [1] | ||||||
| Fee Waiver or Reimbursement | (0.07%) | |||||||
| Net Expenses (as a percentage of Assets) | 2.26% | [2],[3] | ||||||
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