XML 16 R37.htm IDEA: XBRL DOCUMENT v2.4.0.6

Note 11- Related Party Transactions (Detail) (USD $)	Mar. 31, 2012	Mar. 31, 2013 Officer and director sqft
Area of Real Estate Property		5,000
Facility charges	$ 700

X

- Definition

Represents facility charges payable for use of resources.

+ References

No definition available.

+ Details

Name:	pwvi_FacilityCharges
Namespace Prefix:	pwvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant