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Subsequent Events - Additional Information (Detail) (USD $)
1 Months Ended 3 Months Ended 1 Months Ended
May 31, 2014
Mar. 31, 2014
May 13, 2014
Dec. 31, 2013
Apr. 17, 2014
Subsequent Event [Line Items]          
Common stock, shares authorized   3,000,000,000us-gaap_CommonStockSharesAuthorized   3,000,000,000us-gaap_CommonStockSharesAuthorized  
Common Stock Par Value   $ 0.01us-gaap_CommonStockParOrStatedValuePerShare   $ 0.01us-gaap_CommonStockParOrStatedValuePerShare  
Subsequent Event          
Subsequent Event [Line Items]          
Common stock, shares authorized         6,000,000,000us-gaap_CommonStockSharesAuthorized
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Common Stock Par Value         $ 0.0001us-gaap_CommonStockParOrStatedValuePerShare
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Preferred stock, par value         $ 0.0001us-gaap_PreferredStockParOrStatedValuePerShare
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Debt conversion, converted instrument, shares issued 2,015,524,440us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
       
Debt conversion, converted instrument, amount $ 5,629,450us-gaap_DebtConversionConvertedInstrumentAmount1
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
       
Preferred stock, shares authorized         50,000,000us-gaap_PreferredStockSharesAuthorized
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Series B Convertible Preferred Stock | Subsequent Event          
Subsequent Event [Line Items]          
Debt conversion, converted instrument, shares issued 2,000,000us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_StatementEquityComponentsAxis
= posc_SeriesBConvertiblePreferredStockMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
       
Stock issued during period, shares, conversion of convertible securities 20,000us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= posc_SeriesBConvertiblePreferredStockMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
       
Series S Convertible Redeemble | Subsequent Event          
Subsequent Event [Line Items]          
Debt conversion, converted instrument, shares issued 250,000,000us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_StatementEquityComponentsAxis
= posc_SeriesSConvertibleRedeembleMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
       
Stock issued during period, shares, conversion of convertible securities 25,000us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= posc_SeriesSConvertibleRedeembleMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
       
Common Stock | Subsequent Event          
Subsequent Event [Line Items]          
Stock issued during period, shares 2,267,524,440us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
       
Chief Executive Officer          
Subsequent Event [Line Items]          
Repayments of Related Party Debt   57,500us-gaap_RepaymentsOfRelatedPartyDebt
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
     
Chief Executive Officer | Subsequent Event          
Subsequent Event [Line Items]          
Repayments of Related Party Debt     85,000us-gaap_RepaymentsOfRelatedPartyDebt
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefExecutiveOfficerMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
   
Chief Financial Officer          
Subsequent Event [Line Items]          
Repayments of Related Party Debt   107,500us-gaap_RepaymentsOfRelatedPartyDebt
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefFinancialOfficerMember
     
Chief Financial Officer | Subsequent Event          
Subsequent Event [Line Items]          
Repayments of Related Party Debt     $ 50,000us-gaap_RepaymentsOfRelatedPartyDebt
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ChiefFinancialOfficerMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember