v3.25.2
Annual Total Returns
12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Optimum Large Cap Growth Fund                      
Bar Chart Calendar year-by-year total return                    
Bar Chart

Picture 

Year

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

Year Total Return

8.14%

0.88%

32.48%

-0.93%

31.32%

33.98%

17.74%

-34.73%

41.25%

32.31%

                   
Bar Chart Closing

As of June 30, 2025, the Fund’s Institutional Class shares had a calendar year-to-date return of 4.30%. During the periods illustrated in this bar chart, the Institutional Class’s highest quarterly return was 26.94% for the quarter ended June 30, 2020, and its lowest quarterly return was -24.17% for the quarter ended June 30, 2022.

                   
Optimum Large Cap Growth Fund | Institutional Class                      
Year Total Return   32.31% 41.25% (34.73%) 17.74% 33.98% 31.32% (0.93%) 32.48% 0.88% 8.14%
Bar Chart, Year to Date Return, Date Jun. 30, 2025                    
Bar Chart, Year to Date Return 4.30%                    
Highest Quarterly Return, Label highest quarterly return                    
Highest Quarterly Return 26.94%                    
Highest Quarterly Return, Date Jun. 30, 2020                    
Lowest Quarterly Return, Label lowest quarterly return                    
Lowest Quarterly Return (24.17%)                    
Lowest Quarterly Return, Date Jun. 30, 2022                    
Optimum Large Cap Value Fund                      
Bar Chart Calendar year-by-year total return                    
Bar Chart

Picture 

Year

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

Year Total Return

-3.58%

11.19%

16.37%

-9.40%

27.93%

2.6%

27.17%

-6.08%

9.93%

13.64%

                   
Bar Chart Closing

As of June 30, 2025 , the Fund’s Institutional Class shares had a calendar year-to-date return of 6.20%. During the periods illustrated in this bar chart, the Institutional Class’s highest quarterly return was 13.66% for the quarter ended June 30, 2020, and its lowest quarterly return was -24.93% for the quarter ended March 31, 2020.

                   
Optimum Large Cap Value Fund | Insitutional Class                      
Year Total Return   13.64% 9.93% (6.08%) 27.17% 2.60% 27.93% (9.40%) 16.37% 11.19% (3.58%)
Bar Chart, Year to Date Return, Date Jun. 30, 2025                    
Bar Chart, Year to Date Return 6.20%                    
Highest Quarterly Return, Label highest quarterly return                    
Highest Quarterly Return 13.66%                    
Highest Quarterly Return, Date Jun. 30, 2020                    
Lowest Quarterly Return, Label lowest quarterly return                    
Lowest Quarterly Return (24.93%)                    
Lowest Quarterly Return, Date Mar. 31, 2020                    
Optimum Small-Mid Cap Growth Fund                      
Bar Chart Calendar year-by-year total return                    
Bar Chart

Picture 

Year

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

Year Total Return

-5.40%

2.85%

27.61%

-3.30%

25.65%

57.33%

12.52%

-28.07%

13.92%

14.23%

                   
Bar Chart Closing

As of June 30, 2025 , the Fund’s Institutional Class shares had a calendar year-to-date return of -2.25%. During the periods illustrated in this bar chart, the Institutional Class’s highest quarterly return was 36.53% for the quarter ended June 30, 2020, and its lowest quarterly return was -21.65% for the quarter ended December 31, 2018.

                   
Optimum Small-Mid Cap Growth Fund | Institutional Class                      
Year Total Return   14.23% 13.92% (28.07%) 12.52% 57.33% 25.65% (3.30%) 27.61% 2.85% (5.40%)
Bar Chart, Year to Date Return, Date Jun. 30, 2025                    
Bar Chart, Year to Date Return (2.25%)                    
Highest Quarterly Return, Label highest quarterly return                    
Highest Quarterly Return 36.53%                    
Highest Quarterly Return, Date Jun. 30, 2020                    
Lowest Quarterly Return, Label lowest quarterly return                    
Lowest Quarterly Return (21.65%)                    
Lowest Quarterly Return, Date Dec. 31, 2018                    
Optimum Small-Mid Cap Value Fund                      
Bar Chart Calendar year-by-year total return                    
Bar Chart

Picture 

Year

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

Year Total Return

-10.76%

18.43%

9.75%

-16.39%

24.58%

1.42%

29.11%

-14.08%

10.56%

10.21%

                   
Bar Chart Closing

As of June 30, 2025 , the Fund’s Institutional Class shares had a calendar year-to-date return of -3.48%. During the periods illustrated in this bar chart, the Institutional Class’s highest quarterly return was 26.62% for the quarter ended December 31, 2020, and its lowest quarterly return was -35.83% for the quarter ended March 31, 2020.

                   
Optimum Small-Mid Cap Value Fund | Institutional Class                      
Year Total Return   10.21% 10.56% (14.08%) 29.11% 1.42% 24.58% (16.39%) 9.75% 18.43% (10.76%)
Bar Chart, Year to Date Return, Date Jun. 30, 2025                    
Bar Chart, Year to Date Return (3.48%)                    
Highest Quarterly Return, Label highest quarterly return                    
Highest Quarterly Return 26.62%                    
Highest Quarterly Return, Date Dec. 31, 2020                    
Lowest Quarterly Return, Label lowest quarterly return                    
Lowest Quarterly Return (35.83%)                    
Lowest Quarterly Return, Date Mar. 31, 2020                    
Optimum International Fund                      
Bar Chart Calendar year-by-year total return                    
Bar Chart

Picture 

Year

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

Year Total Return

-3.41%

4.55%

30.46%

-14.11%

19.58%

11.41%

8.46%

-23.05%

17.36%

8.4%

                   
Bar Chart Closing

As of June 30, 2025 , the Fund’s Institutional Class shares had a calendar year-to-date return of 18.53%. During the periods illustrated in this bar chart, the Institutional Class’s highest quarterly return was 23.13% for the quarter ended December 31, 2020, and its lowest quarterly return was -25.58% for the quarter ended March 31, 2020.

                   
Optimum International Fund | Institutional Class                      
Year Total Return   8.40% 17.36% (23.05%) 8.46% 11.41% 19.58% (14.11%) 30.46% 4.55% (3.41%)
Bar Chart, Year to Date Return, Date Jun. 30, 2025                    
Bar Chart, Year to Date Return 18.53%                    
Highest Quarterly Return, Label highest quarterly return                    
Highest Quarterly Return 23.13%                    
Highest Quarterly Return, Date Dec. 31, 2020                    
Lowest Quarterly Return, Label lowest quarterly return                    
Lowest Quarterly Return (25.58%)                    
Lowest Quarterly Return, Date Mar. 31, 2020                    
Optimum Fixed Income Fund                      
Bar Chart Calendar year-by-year total return                    
Bar Chart

Picture 

Year

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

Year Total Return

-0.66%

2.96%

4.50%

-0.70%

8.65%

9.19%

-1.78%

-13.95%

5.89%

1.5%

                   
Bar Chart Closing

As of June 30, 2025 , the Fund’s Institutional Class shares had a calendar year-to-date return of 4.12%. During the periods illustrated in this bar chart, the Institutional Class’s highest quarterly return was 7.10% for the quarter ended December 31, 2023, and its lowest quarterly return was -6.20% for the quarter ended June 30, 2022.

                   
Optimum Fixed Income Fund | Institutional Class                      
Year Total Return   1.50% 5.89% (13.95%) (1.78%) 9.19% 8.65% (0.70%) 4.50% 2.96% (0.66%)
Bar Chart, Year to Date Return, Date Jun. 30, 2025                    
Bar Chart, Year to Date Return 4.12%                    
Highest Quarterly Return, Label highest quarterly return                    
Highest Quarterly Return 7.10%                    
Highest Quarterly Return, Date Dec. 31, 2023                    
Lowest Quarterly Return, Label lowest quarterly return                    
Lowest Quarterly Return (6.20%)                    
Lowest Quarterly Return, Date Jun. 30, 2022