Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details)

v2.4.1.9
Long-Term Debt (Details) (USD $)
3 Months Ended 12 Months Ended 0 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Dec. 31, 2014
Oct. 31, 2014
Debt Instrument [Line Items]        
Disposal Group, Including Discontinued Operation, Consideration $ 800,000us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration      
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear      
Long-term Debt, Maturities, Repayments of Principal in Year Two 1,375,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo      
Long-term Debt, Maturities, Repayments of Principal in Year Three 6,659,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree      
Long-term Debt, Maturities, Repayments of Principal in Year Four 9,125,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour      
Legal Fees     300,000us-gaap_LegalFees  
Long-term Debt, Maturities, Repayments of Principal in Year Five 6,375,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive      
Disposal Group, Including Discontinued Operations, Loss (Gain) or Writedown 300,000pdii_DisposalGroupIncludingDiscontinuedOperationsLossGainorWritedown 1,900,000pdii_DisposalGroupIncludingDiscontinuedOperationsLossGainorWritedown    
Business Combination, Consideration Transferred, Liabilities Incurred   11,000,000us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred    
Subordinated Debt [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
     
Long-term Debt, Maturities, Repayments of Principal in Year Two 1,375,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
     
Long-term Debt, Maturities, Repayments of Principal in Year Three 4,125,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
     
Long-term Debt, Maturities, Repayments of Principal in Year Four 4,125,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
     
Long-term Debt, Maturities, Repayments of Principal in Year Five 1,375,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
     
Notes Payable, Other Payables [Member]        
Debt Instrument [Line Items]        
Long-term Debt 7,700,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Debt Instrument, Unamortized Discount 3,300,000us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Loans [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
     
Long-term Debt, Maturities, Repayments of Principal in Year Two 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
     
Long-term Debt, Maturities, Repayments of Principal in Year Three 2,534,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
     
Long-term Debt, Maturities, Repayments of Principal in Year Four 5,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
     
Long-term Debt, Maturities, Repayments of Principal in Year Five 5,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
     
RedPath Integrated Pathology, Inc [Member] | Notes Payable, Other Payables [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage       5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
Interest Expense, Debt 200,000us-gaap_InterestExpenseDebt
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
100,000us-gaap_InterestExpenseDebt
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
   
Long-term Debt 19,700,000us-gaap_LongTermDebt
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
     
Business Combination, Consideration Transferred, Liabilities Incurred   7,400,000us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
   
Debt Instrument, Number of Equal Consecutive Quarterly Installments       8pdii_DebtInstrumentNumberofEqualConsecutiveQuarterlyInstallments
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
RedPath Integrated Pathology, Inc [Member] | Loans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Interest Rate, Stated Percentage       1.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
Debt Instrument, Basis Spread on Variable Rate       12.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
Debt Instrument, Interest Rate, Increase (Decrease)       3.00%us-gaap_DebtInstrumentInterestRateIncreaseDecrease
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
Proceeds from Issuance of Debt       19,600,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
Debt Issuance Cost       100,000us-gaap_DebtIssuanceCosts
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
Loan Processing Fee       300,000us-gaap_LoanProcessingFee
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
Debt Instrument, Exit Fee [Line Items]       .8
Debt Instrument, Prepayment Premium, Base Amount       80,000,000pdii_DebtInstrumentPrepaymentPremiumBaseAmount
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
Debt Instrument, Face Amount       20,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
Maximum [Member] | RedPath Integrated Pathology, Inc [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Periodic Payment, Principal       250,000us-gaap_DebtInstrumentPeriodicPaymentPrincipal
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Molecular Diagnostics [Member] | Maximum [Member] | RedPath Integrated Pathology, Inc [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Quarterly Revenue Based Payments, Percent of Net Sales       125.00%pdii_DebtInstrumentQuarterlyRevenueBasedPaymentsPercentofNetSales
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_ProductOrServiceAxis
= pdii_MolecularDiagnosticsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Date Range One [Member] | RedPath Integrated Pathology, Inc [Member] | Loans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Prepayment Fee, Percent       6.00%pdii_DebtInstrumentPrepaymentFeePercent
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
/ pdii_PrepaymentDateAxis
= pdii_DateRangeOneMember
Date Range Two [Member] | RedPath Integrated Pathology, Inc [Member] | Loans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Prepayment Fee, Percent       5.00%pdii_DebtInstrumentPrepaymentFeePercent
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
/ pdii_PrepaymentDateAxis
= pdii_DateRangeTwoMember
Debt Instrument, Prepayment Premium       1.25%pdii_DebtInstrumentPrepaymentPremium
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
/ pdii_PrepaymentDateAxis
= pdii_DateRangeTwoMember
Date Range Three [Member] [Member] | RedPath Integrated Pathology, Inc [Member] | Loans [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Prepayment Fee, Percent       2.00%pdii_DebtInstrumentPrepaymentFeePercent
/ us-gaap_BusinessAcquisitionAxis
= pdii_RedPathIntegratedPathologyIncMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansMember
/ pdii_PrepaymentDateAxis
= pdii_DateRangeThreeMemberMember
Contingent Consideration Type [Domain]        
Debt Instrument [Line Items]        
Disposal Group, Including Discontinued Operation, Consideration $ 100,000us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= us-gaap_ContingentConsiderationTypeDomain