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2. Summary of Significant Accounting Policies (Details 1)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Summary Of Significant Accounting Policies Details 1    
Top Five Customers by percentage of total revenue 32.00%pbio_TopFiveCustomersByPercentRevenue 53.00%pbio_TopFiveCustomersByPercentRevenue
Federal Agencies percentage of total revenue 6.00%pbio_FederalAgenciesPercentageOfTotalRevenue 33.00%pbio_FederalAgenciesPercentageOfTotalRevenue
Top Five Customers percentage of total receivables 86.00%pbio_TopFiveCustomersPercentageOfTotalReceivables 86.00%pbio_TopFiveCustomersPercentageOfTotalReceivables
Federal Agencies percentage of total receivables 9.00%pbio_FederalAgenciesPercentageOfTotalReceivables 16.00%pbio_FederalAgenciesPercentageOfTotalReceivables