Quarterly report pursuant to Section 13 or 15(d)

3. Summary of Significant Accounting Policies (Details 1)

v2.4.1.9
3. Summary of Significant Accounting Policies (Details 1)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Concentration in revenue      
Top Five Customers 64.00%pbio_TopFiveCustomersByPercentRevenue 65.00%pbio_TopFiveCustomersByPercentRevenue  
Federal Agencies 26.00%pbio_FederalAgenciesPercentageOfTotalRevenue 1.00%pbio_FederalAgenciesPercentageOfTotalRevenue  
Concentration in account receivable      
Top Five Customers 70.00%pbio_TopFiveCustomersPercentageOfTotalReceivables   86.00%pbio_TopFiveCustomersPercentageOfTotalReceivables
Federal Agencies 19.00%pbio_FederalAgenciesPercentageOfTotalReceivables   9.00%pbio_FederalAgenciesPercentageOfTotalReceivables