Annual report pursuant to Section 13 and 15(d)

9. Stockholders' (Deficit) (Details 3)

v2.4.1.9
9. Stockholders' (Deficit) (Details 3) (USD $)
 12 Months Ended
Dec. 31, 2014
Warrants November 2011  
Contractual life, in years 60 months
Expected volatility 104.50%pbio_ExpectedVolatility
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2011Member
Risk-free interest rate 0.875%pbio_RiskfreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2011Member
Exercise price $ 0.81pbio_WarrantExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2011Member
Fair value per warrant $ 0.54pbio_FairValuePerWarrant
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2011Member
Warrants Revalued December 2013  
Contractual life, in years 34 months
Expected volatility 154.80%pbio_ExpectedVolatility
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2013RevaluedMember
Risk-free interest rate 0.78%pbio_RiskfreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2013RevaluedMember
Exercise price $ 0.25pbio_WarrantExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2013RevaluedMember
Fair value per warrant $ 0.21pbio_FairValuePerWarrant
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2013RevaluedMember
Warrants Revalued December 2014  
Contractual life, in years 22 months
Expected volatility 116.00%pbio_ExpectedVolatility
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2014RevaluedMember
Risk-free interest rate 0.58%pbio_RiskfreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2014RevaluedMember
Exercise price $ 0.25pbio_WarrantExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2014RevaluedMember
Fair value per warrant $ 0.15pbio_FairValuePerWarrant
/ us-gaap_ClassOfWarrantOrRightAxis
= pbio_Warrants2014RevaluedMember