v3.26.3
Annual Fund Operating Expenses - Atlas America Fund [Member]
Oct. 28, 2026
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.75%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.01%
Acquired Fund Fees and Expenses 0.18% [1]
Expenses (as a percentage of Assets) 0.94%
[1] “Acquired Fund Fees and Expenses” (“AFFE”) are indirect fees and expenses that the Fund incurs from investing in the shares of other investment companies. Total Annual Fund Operating Expenses do not correlate to the expense ratios in the Fund’s Financial Highlights because the Financial Highlights include only the direct operating expenses incurred by the Fund and exclude AFFE.