v3.26.1
Average Annual Total Returns - Nomura Value Fund - Class A, C, R, Institutional and R6 - Nomura Value Fund
 12 Months Ended 60 Months Ended 120 Months Ended
Nov. 30, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Russell 1000 Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent [1]   17.37% 13.59% 14.59%
Russell 1000 Value Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent [1]   15.91% 11.33% 10.53%
A        
Prospectus [Line Items]        
Average Annual Return, Percent   4.23% 5.88% 7.20%
A | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent   (1.16%) 1.45% 4.45%
A | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Percent   6.37% 4.22% 5.48%
C        
Prospectus [Line Items]        
Average Annual Return, Percent   8.91% 6.34% 7.03%
R        
Prospectus [Line Items]        
Average Annual Return, Percent   10.31% 6.88% 7.57%
Institutional        
Prospectus [Line Items]        
Average Annual Return, Percent   10.93% 7.43% 8.12%
R6        
Prospectus [Line Items]        
Average Annual Return, Percent   10.91% 7.52% 7.90%
Performance Inception Date May 02, 2016      
[1]
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