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Organization and Business - Additional Information (Detail) | Apr. 30, 2014 entity shares
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Number of publicly-traded entities | entity | 2
Number of shares issued for each share prior to spin-off | shares | 1

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- Definition Spin-Off, Number of Legally Separate Publicly Traded Entities + References No definition available. + Details
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- Definition Spin-Off, Shares Issued upon Conversion + References No definition available. + Details
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- References No definition available. + Details
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