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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2014
Net Cash Provided by (Used in) Operating Activities [Abstract] |  |
Fair value of the common stock warrants recorded as additional paid in capital | $ 16,500pwvi_FairValueOfCommonStockWarrantsRecordedAsAdditionalPaidInCapital | $ 88,000pwvi_FairValueOfCommonStockWarrantsRecordedAsAdditionalPaidInCapital
Fair value of the common stock warrants recorded as derivative liability | $ 16,500pwvi_FairValueOfCommonStockWarrantsRecordedAsDerivativeLiability | $ 88,000pwvi_FairValueOfCommonStockWarrantsRecordedAsDerivativeLiability

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- Definition Custom Element. + References No definition available. + Details
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