Annual report pursuant to Section 13 and 15(d)

9. Stockholders’ (Deficit) (Details)

v2.4.1.9
9. Stockholders’ (Deficit) (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Warrrants Series J Feb 2013  
Contractual life, in years 36 months
Expected volatility 141.80%pbio_ExpectedVolatility
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMember
Risk-free interest rate 0.39%pbio_RiskfreeInterestRate
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMember
Exercise price $ 0.40pbio_WarrantExercisePrice
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMember
Fair value per warrant $ 0.36pbio_FairValuePerWarrant
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMember
Warrrants Series J March 2013  
Contractual life, in years 36 months
Expected volatility 144.30%pbio_ExpectedVolatility
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMarchMember
Risk-free interest rate 0.36%pbio_RiskfreeInterestRate
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMarchMember
Exercise price $ 0.40pbio_WarrantExercisePrice
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMarchMember
Fair value per warrant $ 0.26pbio_FairValuePerWarrant
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMarchMember
Warrrants Series J May 2013  
Contractual life, in years 36 months
Expected volatility 147.00%pbio_ExpectedVolatility
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMayMember
Risk-free interest rate 0.36%pbio_RiskfreeInterestRate
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMayMember
Exercise price $ 0.40pbio_WarrantExercisePrice
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMayMember
Fair value per warrant $ 0.30pbio_FairValuePerWarrant
/ us-gaap_PlanNameAxis
= pbio_WarrrantsSeriesJMayMember