v3.8.0.1

Offering Costs - Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Offering costs, amortization period | 12 months

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- Definition Offering costs, amortization period, months. + References No definition available. + Details
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- References No definition available. + Details
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