Annual Fund Operating Expenses |
Jan. 28, 2026 |
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|---|---|---|---|---|---|---|---|---|---|---|
| Keeley Gabelli Small Cap Dividend Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | February 28, 2027 | |||||||||
| Keeley Gabelli Small Cap Dividend Fund | Keeley Gabelli Small Cap Dividend Fund Class A | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 1.00% | |||||||||
| Distribution or Similar (Non 12b-1) Fees | 0.25% | |||||||||
| Other Expenses (as a percentage of Assets): | 0.24% | |||||||||
| Expenses (as a percentage of Assets) | 1.49% | |||||||||
| Fee Waiver or Reimbursement | (0.20%) | [1] | ||||||||
| Net Expenses (as a percentage of Assets) | 1.29% | |||||||||
| Keeley Gabelli Small Cap Dividend Fund | Keeley Gabelli Small Cap Dividend Fund Class I | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 1.00% | |||||||||
| Distribution or Similar (Non 12b-1) Fees | 0.00% | |||||||||
| Other Expenses (as a percentage of Assets): | 0.24% | |||||||||
| Expenses (as a percentage of Assets) | 1.24% | |||||||||
| Fee Waiver or Reimbursement | (0.20%) | [1] | ||||||||
| Net Expenses (as a percentage of Assets) | 1.04% | |||||||||
| Keeley Gabelli SMID Cap Value Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | February 28, 2027 | |||||||||
| Keeley Gabelli SMID Cap Value Fund | Keeley Gabelli SMID Cap Value Fund Class A | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 1.00% | |||||||||
| Distribution or Similar (Non 12b-1) Fees | 0.25% | |||||||||
| Other Expenses (as a percentage of Assets): | 0.56% | |||||||||
| Acquired Fund Fees and Expenses | 0.04% | [2] | ||||||||
| Expenses (as a percentage of Assets) | 1.85% | |||||||||
| Fee Waiver or Reimbursement | (0.42%) | [3] | ||||||||
| Net Expenses (as a percentage of Assets) | 1.43% | |||||||||
| Keeley Gabelli SMID Cap Value Fund | Keeley Gabelli SMID Cap Value Fund Class I | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 1.00% | |||||||||
| Distribution or Similar (Non 12b-1) Fees | 0.00% | |||||||||
| Other Expenses (as a percentage of Assets): | 0.56% | |||||||||
| Acquired Fund Fees and Expenses | 0.04% | [2] | ||||||||
| Expenses (as a percentage of Assets) | 1.60% | |||||||||
| Fee Waiver or Reimbursement | (0.42%) | [3] | ||||||||
| Net Expenses (as a percentage of Assets) | 1.18% | |||||||||
| Keeley Gabelli Mid Cap Dividend Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | February 28, 2027 | |||||||||
| Keeley Gabelli Mid Cap Dividend Fund | Keeley Gabelli Mid Cap Dividend Fund Class A | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 0.90% | |||||||||
| Distribution or Similar (Non 12b-1) Fees | 0.25% | |||||||||
| Other Expenses (as a percentage of Assets): | 0.27% | |||||||||
| Expenses (as a percentage of Assets) | 1.42% | |||||||||
| Fee Waiver or Reimbursement | (0.22%) | [4] | ||||||||
| Net Expenses (as a percentage of Assets) | 1.20% | |||||||||
| Keeley Gabelli Mid Cap Dividend Fund | Keeley Gabelli Mid Cap Dividend Fund Class I | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 0.90% | |||||||||
| Distribution or Similar (Non 12b-1) Fees | 0.00% | |||||||||
| Other Expenses (as a percentage of Assets): | 0.27% | |||||||||
| Expenses (as a percentage of Assets) | 1.17% | |||||||||
| Fee Waiver or Reimbursement | (0.22%) | [4] | ||||||||
| Net Expenses (as a percentage of Assets) | 0.95% | |||||||||
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