v3.26.1
Shareholder Fees - Optimum Fund Trust Classes A, C, Institutional
Mar. 31, 2026
Optimum Large Cap Growth Fund | A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Optimum Large Cap Growth Fund | C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [1]
Optimum Large Cap Growth Fund | Institutional  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Optimum Small-Mid Cap Growth Fund | A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Optimum Small-Mid Cap Growth Fund | C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [2]
Optimum Small-Mid Cap Growth Fund | Institutional  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Optimum Small-Mid Cap Value Fund | A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Optimum Small-Mid Cap Value Fund | C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [3]
Optimum Small-Mid Cap Value Fund | Institutional  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Optimum International Fund | A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Optimum International Fund | C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [4]
Optimum International Fund | Institutional  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Optimum Fixed Income Fund | A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 4.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Optimum Fixed Income Fund | C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [5]
Optimum Fixed Income Fund | Institutional  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Optimum Large Cap Value Fund | A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Optimum Large Cap Value Fund | C  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 1.00% [6]
Optimum Large Cap Value Fund | Institutional  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
[1]
1 Class C shares redeemed within one year of purchase are subject to a 1.00% contingent deferred sales charge (CDSC).
[2]
1 Class C shares redeemed within one year of purchase are subject to a 1.00% contingent deferred sales charge (CDSC).
[3]
1 Class C shares redeemed within one year of purchase are subject to a 1.00% contingent deferred sales charge (CDSC).
[4]
1 Class C shares redeemed within one year of purchase are subject to a 1.00% contingent deferred sales charge (CDSC).
[5]
1 Class C shares redeemed within one year of purchase are subject to a 1.00% contingent deferred sales charge (CDSC).
[6]
1 Class C shares redeemed within one year of purchase are subject to a 1.00% contingent deferred sales charge (CDSC).