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Summary of Significant Accounting Policies (Details) (USD $)
12 Months Ended 94 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Antidilutive Securities Excluded and Imapirment charges      
Research and development cost $ 364,095us-gaap_ResearchAndDevelopmentExpense $ 459,651us-gaap_ResearchAndDevelopmentExpense $ 4,152,640us-gaap_ResearchAndDevelopmentExpense
Number of warrants excluded from weighted average common shares outstanding on a diluted basis. 5,586,000pwvi_NumberOfWarrantsExcludedFromWeightedAverageCommonSharesOutstandingOnADilutedBasis 7,586,000pwvi_NumberOfWarrantsExcludedFromWeightedAverageCommonSharesOutstandingOnADilutedBasis  
Number of options excluded from weighted average common shares outstanding on a diluted basis. 2,750,000pwvi_NumberOfOptionsExcludedFromWeightedAverageCommonSharesOutstandingOnADilutedBasis 2,750,000pwvi_NumberOfOptionsExcludedFromWeightedAverageCommonSharesOutstandingOnADilutedBasis