v3.25.2
Average Annual Total Returns - ALPS Global Opportunity Fund
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Morningstar Developed Markets Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 17.55% 10.49% 9.59%
Red Rocks Global Listed Private Equity Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [2] 17.88% 8.58% 9.54%
Morningstar Global Markets Mid Cap Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [2],[3] 10.54% 7.30% 7.78%
Investor Class      
Prospectus [Line Items]      
Average Annual Return, Percent 17.79% 7.82% 9.22%
Investor Class | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 12.19% 4.40% 6.12%
Investor Class | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 11.50% 4.90% 6.20%
Class A      
Prospectus [Line Items]      
Average Annual Return, Percent 11.24% 6.62% 8.61%
Class C      
Prospectus [Line Items]      
Average Annual Return, Percent 15.81% 7.01% 8.42%
Class I      
Prospectus [Line Items]      
Average Annual Return, Percent 18.10% 8.09% 9.50%
Class R      
Prospectus [Line Items]      
Average Annual Return, Percent 17.61% 7.59% 8.99%
[1] Broad-based securities market index.
[2] Additional index.
[3] The Morningstar Global Markets Mid Cap Index is replacing the Red Rocks Global Listed Private Equity Index as the Fund’s additional benchmark. The Adviser made this recommendation to the Board because the Morningstar Global Markets Mid Cap Index is representative of the Fund’s holdings. Information on both indices will be shown for a one-year transition period.