Cullen High Dividend Equity Fund General Stock Risks [Member] Medium-Capitalization Companies Risk [Member] Large-Capitalization Companies Risk [Member] Value Style Investing Risk [Member] Foreign Securities Risk [Member] Options or Covered Call Writing Risk [Member] Market Disruptions Risk; Sovereign Debt Crises Risk [Member] Government Intervention Risk [Member] Investment in Other Investment Companies Risk [Member] Cullen International High Dividend Fund European Securities Risk [Member] Geographic Focus Risk [Member] Foreign Currency Risk [Member] Financials Sector Risk [Member] High Portfolio Turnover Risk [Member] Cullen Small Cap Value Fund Small-Capitalization Companies Risk [Member] Large Shareholder Risk [Member] Cullen Value Fund Cullen Emerging Markets High Dividend Fund Risk of Investing in Emerging Market Countries [Member] Asia-Pacific Countries Risk [Member] Technology Securities Risk [Member] Cullen Enhanced Equity Income Fund Cullen High Dividend Equity Fund - Retail Class Cullen High Dividend Equity Fund - Class C Cullen High Dividend Equity Fund - Class I Cullen International High Dividend Fund - Retail Class Cullen International High Dividend Fund - Class C Cullen International High Dividend Fund - Class I Cullen Small Cap Value Fund - Retail Class Cullen Small Cap Value Fund - Class C Cullen Small Cap Value Fund - Class I Cullen Value Fund - Retail Class Cullen Value Fund - Class C Cullen Value Fund - Class I Cullen Emerging Markets High Dividend Fund - Retail Class Cullen Emerging Markets High Dividend Fund - Class C Cullen Emerging Markets High Dividend Fund - Class I Cullen Enhanced Equity Income Fund - Retail Class Cullen Enhanced Equity Income Fund - Class C Cullen Enhanced Equity Income Fund - Class I Cullen Emerging Markets High Dividend Fund - Class R6 S&P 500® Index (reflects no deduction for fees, expenses or taxes) MSCI EAFE Index (reflects no deduction for fees, expenses or taxes) Russell 2000 Value Index (reflects no deduction for fees, expenses or taxes) Russell 1000 Index S&P 500® Total Return Index (reflects no deduction for fees, expenses or taxes) MSCI Emerging Markets Stock Index (reflects no deduction for fees, expenses or taxes) CBOE S&P 500 BuyWrite Index (reflects no deduction for fees, expenses or taxes) Cullen High Dividend Equity Fund. Cullen High Dividend Equity Fund - Retail Class. Cullen High Dividend Equity Fund - Class C. Cullen High Dividend Equity Fund - Class I. Cullen International High Dividend Fund. Cullen International High Dividend Fund - Retail Class. Cullen International High Dividend Fund - Class C. Cullen International High Dividend Fund - Class I. Cullen Small Cap Value Fund. Cullen Small Cap Value Fund - Retail Class. Cullen Small Cap Value Fund - Class I. Cullen Small Cap Value Fund - Class C. Cullen Emerging Markets High Dividend Fund. Cullen Emerging Markets High Dividend Fund - Class C. Cullen Emerging Markets High Dividend Fund - Class I. Cullen Emerging Markets High Dividend Fund - Retail Class. Cullen Value Fund. Cullen Value Fund - Class C. Cullen Value Fund - Class I. Cullen Value Fund - Retail Class. Cullen Enhanced Equity Income Fund. Cullen Enhanced Equity Income Fund - Class C. Cullen Enhanced Equity Income Fund - Class I. Cullen Enhanced Equity Income Fund - Retail Class. Medium-Capitalization Companies Risk. Large-Capitalization Companies Risk. Options or Covered Call Writing Risk. Government Intervention Risk. Investment in Other Investment Companies Risk. S&P 500® Index (reflects no deduction for fees, expenses or taxes). General Stock Risks. MSCI EAFE Index (reflects no deduction for fees, expenses or taxes). Russell 2000 Value Index (reflects no deduction for fees, expenses or taxes). Russell 1000 Index. MSCI Emerging Markets Stock Index (reflects no deduction for fees, expenses or taxes). CBOE S&P 500 BuyWrite Index (reflects no deduction for fees, expenses or taxes). Value Style Investing Risk. Foreign Securities Risk. European Securities Risk. Geographic Focus Risk. Foreign Currency Risk. Small-Capitalization Companies Risk. Financials Sector Risk. Large Shareholder Risk. Market Disruptions Risk; Sovereign Debt Crises Risk. High Portfolio Turnover Risk. Risk of Investing in Emerging Market Countries. Technology Securities Risk. Cullen Emerging Markets High Dividend Fund - Class R6. Asia-Pacific Countries Risk. S&P 500® Total Return Index (reflects no deduction for fees, expenses or taxes)