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2. Summary of Significant Accounting Policies (Details 6) (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Change in fair value | $ 145,710us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings | $ 183,758us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings |
| Reclassification to equity | (330,405)pbio_ReclassificationToEquity | |
| Quoted Prices in active markets (Level 1) | ||
| Series D common stock Purchase Warrants |
0us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = pbio_QuotedPricesInActiveMarketsLevel1Member |
0us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = pbio_QuotedPricesInActiveMarketsLevel1Member |
| Significant Other Observable Inputs Level 2 | ||
| Series D common stock Purchase Warrants |
0us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = pbio_SignificantOtherObservableInputsLevel2Member |
0us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = pbio_SignificantOtherObservableInputsLevel2Member |
| Significant Unobservable Inputs Level 3 | ||
| Series D common stock Purchase Warrants |
159,875us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = pbio_SignificantUnobservableInputsLevel3Member |
344,570us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = pbio_SignificantUnobservableInputsLevel3Member |
| Total Fair Value | ||
| Series D common stock Purchase Warrants |
$ 159,875us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = pbio_TotalFairValueMember |
$ 344,570us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_FairValueByFairValueHierarchyLevelAxis = pbio_TotalFairValueMember |
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- Definition
No authoritative reference available. No definition available.
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- Definition
Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of gain (loss) recognized in the income statement of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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