v3.26.1
S000049941 [Member] Average Annual Total Returns
 12 Months Ended 60 Months Ended 106 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Class I        
Prospectus [Line Items]        
Average Annual Return, Percent 4.58% 6.55%   9.93%
Class I | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent 3.85% 5.87%   9.43%
Class I | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Percent 3.24% 5.07%   8.09%
Class N        
Prospectus [Line Items]        
Average Annual Return, Percent 4.39% 6.34% 9.27% [1]
Performance Inception Date     Feb. 24, 2017  
Class N | S&P 500® Index (reflects no deduction for fees, expenses, or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent 17.88% 14.42% 14.66% [1] 14.82%
Performance Inception Date     Feb. 24, 2017  
Class N | Russell 2500™ Index (reflects no deduction for fees, expenses, or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent 11.91% 7.26% 9.31% [1] 10.40%
Performance Inception Date     Feb. 24, 2017  
Class Z        
Prospectus [Line Items]        
Average Annual Return, Percent 4.68% 6.62% 9.54% [1]
Performance Inception Date     Feb. 24, 2017  
Class Z | S&P 500® Index (reflects no deduction for fees, expenses, or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent 17.88% 14.42% 14.66% [1] 14.82%
Performance Inception Date     Feb. 24, 2017  
Class Z | Russell 2500™ Index (reflects no deduction for fees, expenses, or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent 11.91% 7.26% 9.31% [1] 10.40%
Performance Inception Date     Feb. 24, 2017  
[1] Class N, Class Z and Index performance shown reflects performance since the inception date of the Fund's Class N and Class Z shares on February 24, 2017.