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Acquisition - Future amortization of intangible asset-intellectual property (Details) (USD $) | Dec. 31, 2014
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Future Amortization Assets |
2015 | $ 54,953pwvi_FutureAmortization2015
Total | $ 54,953pwvi_TotalFutureAmortization

X
- Definition The amount of amortization expense expected to be recognized during year one of the succeeding fiscal years. + References No definition available. + Details
Name: | pwvi_FutureAmortization2015
Namespace Prefix: | pwvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | pwvi_FutureAmortizationAssetsAbstract
Namespace Prefix: | pwvi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate estimated amortization expense for succeeding fiscal years for intangible assets subject to amortization. + References No definition available. + Details
Name: | pwvi_TotalFutureAmortization
Namespace Prefix: | pwvi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant