Income Taxes (Details Textual) (USD $)	12 Months Ended
Nov. 30, 2014	Nov. 30, 2013
Income Taxes (Textual)
Net operating loss carryforwards for federal income tax purposes	$ 32,000,000us-gaap_OperatingLossCarryforwards	$ 33,000,000us-gaap_OperatingLossCarryforwards
Operating loss carryforwards, expiration dates	Expire in the years 2014 through 2034.
Gain on debt forgiveness not included in taxable income under section 108(a) of the Internal Revenue Code	$ 2,700,000pvsp_GainOnDebtForgiveness

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant