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Example, with Redemption, 5 Years Expense Example Year 10 Expense Example, with Redemption, 10 Years Expense Heading Expense [Heading] Expense Narrative [Text Block] Expense Narrative [Text Block] Expenses Over Assets Total annual fund operating expenses Highest Quarterly Return Label Highest Quarterly Return, Label Legal Entity [Axis] Series [Axis] Lowest Quarterly Return Label Lowest Quarterly Return, Label Management Fees Over Assets Management fee Objective Heading Objective [Heading] Objective Primary [Text Block] Objective, Primary [Text Block] Objective Secondary [Text Block] Objective, Secondary [Text Block] Operating Expenses [Abstract] Operating Expenses: Operating Expenses Caption Operating Expenses Caption [Text] Other Expenses Over Assets Other expenses Performance Additional Market Index Performance Additional Market Index [Text] Performance Information Illustrates Variability Of Returns Performance Information Illustrates Variability of Returns [Text] Performance Measure 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