Average Annual Total Returns - Copley Fund |
12 Months Ended | 60 Months Ended | 120 Months Ended | ||
|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
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| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 16.24% | 10.10% | 11.65% | ||
| After Taxes on Distributions | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | [1] | 16.24% | 10.10% | 11.65% | |
| After Taxes on Distributions and Sales | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | [1] | 9.61% | 8.02% | 9.74% | |
| S&P 500 (reflects no deduction for fees, expenses, or taxes) | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 17.88% | 14.42% | 14.82% | ||
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