v3.25.2
Average Annual Total Returns
12 Months Ended 60 Months Ended 120 Months Ended
Mar. 31, 2025
Mar. 31, 2025
Mar. 31, 2025
Mar. 31, 2025
Optimum Large Cap Growth Fund        
Average Annual Return, Caption Average annual total returns for periods ended December 31, <span style="-sec-ix-redline:true">2024</span>      
Performance Table Footnotes Frank Russell Company is the source and owner of the trademarks, service marks, and copyrights related to the Russell Indexes. Russell® is a trademark of Frank Russell Company.      
Optimum Large Cap Growth Fund | Russell 1000 Index        
Average Annual Return, Percent   24.51% 14.28% 12.87%
Index No Deduction for Fees, Expenses, or Taxes (reflects no deduction for fees, expenses, or taxes)      
Optimum Large Cap Growth Fund | Russell 1000 Growth Index        
Average Annual Return, Percent   33.36% 18.96% 16.78%
Index No Deduction for Fees, Expenses, or Taxes (reflects no deduction for fees, expenses, or taxes)      
Optimum Large Cap Growth Fund | Institutional Class | After Taxes on Distributions        
Average Annual Return, Percent   29.47% 11.54% 11.28%
Optimum Large Cap Growth Fund | Institutional Class | After Taxes on Distributions and Sales        
Average Annual Return, Percent   20.60% 10.73% 10.64%
Optimum Large Cap Growth Fund | Institutional Class        
Average Annual Return, Percent   32.31% 13.99% 13.72%
Optimum Large Cap Growth Fund | Class A        
Average Annual Return, Percent   24.39% 12.37% 12.77%
Optimum Large Cap Growth Fund | Class C        
Average Annual Return, Percent   29.93% 12.82% 12.58%
Optimum Large Cap Value Fund        
Average Annual Return, Caption Average annual total returns for periods ended December 31, <span style="-sec-ix-redline:true">2024</span>      
Performance Table Footnotes Frank Russell Company is the source and owner of the trademarks, service marks, and copyrights related to the Russell Indexes. Russell® is a trademark of Frank Russell Company.      
Optimum Large Cap Value Fund | Russell 1000 Index        
Average Annual Return, Percent   24.51% 14.28% 12.87%
Index No Deduction for Fees, Expenses, or Taxes (reflects no deduction for fees, expenses, or taxes)      
Optimum Large Cap Value Fund | Russell 1000 Value Index        
Average Annual Return, Percent   14.37% 8.68% 8.49%
Index No Deduction for Fees, Expenses, or Taxes (reflects no deduction for fees, expenses, or taxes)      
Optimum Large Cap Value Fund | Insitutional Class | After Taxes on Distributions        
Average Annual Return, Percent   11.85% 7.04% 6.70%
Optimum Large Cap Value Fund | Insitutional Class | After Taxes on Distributions and Sales        
Average Annual Return, Percent   9.42% 6.83% 6.40%
Optimum Large Cap Value Fund | Insitutional Class        
Average Annual Return, Percent   13.64% 8.89% 8.27%
Optimum Large Cap Value Fund | Class A        
Average Annual Return, Percent   6.83% 7.34% 7.36%
Optimum Large Cap Value Fund | Class C        
Average Annual Return, Percent   11.48% 7.79% 7.19%
Optimum Small-Mid Cap Growth Fund        
Average Annual Return, Caption Average annual total returns for periods ended December 31, <span style="-sec-ix-redline:true">2024</span>      
Performance Table Footnotes Frank Russell Company is the source and owner of the trademarks, service marks, and copyrights related to the Russell Indexes. Russell® is a trademark of Frank Russell Company.      
Optimum Small-Mid Cap Growth Fund | Russell 3000 Index        
Average Annual Return, Percent   23.81% 13.86% 12.55%
Index No Deduction for Fees, Expenses, or Taxes (reflects no deduction for fees, expenses, or taxes)      
Optimum Small-Mid Cap Growth Fund | Russell 2500 Growth Index        
Average Annual Return, Percent   13.90% 8.08% 9.45%
Index No Deduction for Fees, Expenses, or Taxes (reflects no deduction for fees, expenses, or taxes)      
Optimum Small-Mid Cap Growth Fund | Institutional Class | After Taxes on Distributions        
Average Annual Return, Percent   14.23% 7.57% 6.86%
Optimum Small-Mid Cap Growth Fund | Institutional Class | After Taxes on Distributions and Sales        
Average Annual Return, Percent   8.42% 7.79% 7.03%
Optimum Small-Mid Cap Growth Fund | Institutional Class        
Average Annual Return, Percent   14.23% 10.63% 9.59%
Optimum Small-Mid Cap Growth Fund | Class A        
Average Annual Return, Percent   7.31% 9.05% 8.68%
Optimum Small-Mid Cap Growth Fund | Class C        
Average Annual Return, Percent   12.07% 9.52% 8.50%
Optimum Small-Mid Cap Value Fund        
Average Annual Return, Caption Average annual total returns for periods ended December 31, <span style="-sec-ix-redline:true">2024</span>      
Performance Table Footnotes Frank Russell Company is the source and owner of the trademarks, service marks, and copyrights related to the Russell Indexes. Russell® is a trademark of Frank Russell Company.      
Optimum Small-Mid Cap Value Fund | Russell 3000 Index        
Average Annual Return, Percent   23.81% 13.86% 12.55%
Index No Deduction for Fees, Expenses, or Taxes (reflects no deduction for fees, expenses, or taxes)      
Optimum Small-Mid Cap Value Fund | Russell 2500 Value Index        
Average Annual Return, Percent   10.98% 8.44% 7.81%
Index No Deduction for Fees, Expenses, or Taxes (reflects no deduction for fees, expenses, or taxes)      
Optimum Small-Mid Cap Value Fund | Institutional Class | After Taxes on Distributions        
Average Annual Return, Percent   8.04% 4.97% 3.92%
Optimum Small-Mid Cap Value Fund | Institutional Class | After Taxes on Distributions and Sales        
Average Annual Return, Percent   7.40% 4.84% 3.86%
Optimum Small-Mid Cap Value Fund | Institutional Class        
Average Annual Return, Percent   10.21% 6.51% 5.18%
Optimum Small-Mid Cap Value Fund | Class A        
Average Annual Return, Percent   3.56% 4.97% 4.28%
Optimum Small-Mid Cap Value Fund | Class C        
Average Annual Return, Percent   8.10% 5.43% 4.12%
Optimum International Fund        
Average Annual Return, Caption Average annual total returns for periods ended December 31, <span style="-sec-ix-redline:true">2024</span>      
Optimum International Fund | MSCI ACWI (All Country World Index) ex USA Index (net)        
Average Annual Return, Percent   5.53% 4.10% 4.80%
Index No Deduction for Fees, Expenses, or Taxes (reflects no deduction for fees or expenses <span style="-sec-ix-redline:true">but reflects the deduction of foreign withholding taxes on dividends</span>)      
Optimum International Fund | MSCI ACWI (All Country World Index) ex USA Index (gross)        
Average Annual Return, Percent   6.09% 4.61% 5.31%
Index No Deduction for Fees, Expenses, or Taxes (reflects no deduction for fees, expenses, or <span style="-sec-ix-redline:true">foreign withholding taxes on dividends</span>)      
Optimum International Fund | Institutional Class | After Taxes on Distributions        
Average Annual Return, Percent   8.17% 2.43% 4.02%
Optimum International Fund | Institutional Class | After Taxes on Distributions and Sales        
Average Annual Return, Percent   5.45% 2.69% 3.85%
Optimum International Fund | Institutional Class        
Average Annual Return, Percent   8.40% 3.42% 4.82%
Optimum International Fund | Class A        
Average Annual Return, Percent   1.90% 1.95% 3.94%
Optimum International Fund | Class C        
Average Annual Return, Percent   6.28% 2.39% 3.77%
Optimum Fixed Income Fund        
Average Annual Return, Caption Average annual total returns for periods ended December 31, <span style="-sec-ix-redline:true">2024</span>      
Optimum Fixed Income Fund | Bloomberg US Aggregate Index        
Average Annual Return, Percent   1.25% (0.33%) 1.35%
Index No Deduction for Fees, Expenses, or Taxes (reflects no deduction for fees, expenses, or taxes)      
Optimum Fixed Income Fund | Institutional Class | After Taxes on Distributions        
Average Annual Return, Percent   (0.06%) (1.54%) 0.08%
Optimum Fixed Income Fund | Institutional Class | After Taxes on Distributions and Sales        
Average Annual Return, Percent   0.90% (0.66%) 0.51%
Optimum Fixed Income Fund | Institutional Class        
Average Annual Return, Percent   1.50% (0.16%) 1.35%
Optimum Fixed Income Fund | Class A        
Average Annual Return, Percent   (3.23%) (1.31%) 0.65%
Optimum Fixed Income Fund | Class C        
Average Annual Return, Percent   (0.40%) (1.17%) 0.35%