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Summary of Significant Accounting Policies (Details)	3 Months Ended
	Mar. 31, 2015
Antidilutive Securities Excluded and Imapirment charges
Number of warrants excluded from weighted average common shares outstanding on a diluted basis.	5,086,000pwvi_NumberOfWarrantsExcludedFromWeightedAverageCommonSharesOutstandingOnADilutedBasis
Number of options excluded from weighted average common shares outstanding on a diluted basis.	2,750,000pwvi_NumberOfOptionsExcludedFromWeightedAverageCommonSharesOutstandingOnADilutedBasis

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- Definition

Number of options excluded from weighted average common shares outstanding on a diluted basis.

+ References

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- Definition

Number of warrants excluded from weighted average common shares outstanding on a diluted basis.

+ References

No definition available.

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