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Net Asset Value and Financial Highlights (Details Textual) | Feb. 20, 2015
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Percentage Of Fund Expenses Capped | 1.50%

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- Definition It denotes the percentage of fund expenses capped at average net assets. + References No definition available. + Details
Name: | cik000161094_PercentageOfFundExpensesCapped
Namespace Prefix: | cik000161094_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant