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DISCONTINUED OPERATIONS (Details) | 5 Months Ended
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Dec. 09, 2015
Discontinued Operations and Disposal Groups [Abstract] |
Investment Distribution Fee, Annual Rate, Percentage | 0.25%

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- Definition The annual rate investment distribution fee received, as a percentage, of the average daily net assets of the investor class of each of the equity funds. + References No definition available. + Details
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Namespace Prefix: | grow_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration