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Acquisition - Future amortization of intangible asset-intellectual property (Details) (USD $)	Dec. 31, 2014
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