Nomura Growth and Income Fund Nomura Growth and Income Fund Nomura Opportunity Fund Nomura Opportunity Fund Djanuaryequityfundsivpro_2376 January - Equity Funds IV_Pro Djanuaryequityfundsivsai_2379 January - Equity Funds IV_SAI Class Institutional - C000212967 Institutional Class Class A - C000212968 Class A Class R6 - C000212969 Class R6 Class A - C000212936 Class A Class R6 - C000212937 Class R6 Class Institutional - C000212938 Institutional Class Class C - C000240403 Class C Class R - C000240404 Class R Industry and sector risk Industry and sector risk [Member] Active management and selection risk [Member] Active management and selection risk [Member] Russell 1000 Index (reflects no deduction for fees, expenses or taxes) Russell 1000 Index (reflects no deduction for fees, expenses or taxes) Russell 1000 Value Index (reflects no deduction for fees, expenses or taxes) Russell 1000 Value Index (reflects no deduction for fees, expenses or taxes) Market Risk Market Risk [Member] Company size risk [Member] Company size risk [Member] Real estate industry risk [Member] Real estate industry risk [Member] Liquidity Risk Liquidity Risk [Member] Government and Regulatory Risk Government and Regulatory Risk [Member] Active Managment and Selection Risk Active Managment and Selection Risk [Member] Russell 3000 Index (reflects no deduction for fees, expenses or taxes) Russell 3000 Index (reflects no deduction for fees, expenses or taxes) Russell Midcap Value Index (reflects no deduction for fees, expenses or taxes) Russell Midcap Value Index (reflects no deduction for fees, expenses or taxes)