Quarterly report pursuant to Section 13 or 15(d)

Goodwill Intangible assets (Details)

v2.4.1.9
Goodwill Intangible assets (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]      
Amortization of Intangible Assets $ 870us-gaap_AmortizationOfIntangibleAssets $ 0us-gaap_AmortizationOfIntangibleAssets  
Finite-Lived Intangible Assets, Gross 47,468us-gaap_FiniteLivedIntangibleAssetsGross    
Finite-Lived Intangible Assets, Accumulated Amortization 1,464us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization    
Intangible Assets, Net (Excluding Goodwill) 46,004us-gaap_IntangibleAssetsNetExcludingGoodwill    
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 5,102us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear    
Finite-Lived Intangible Assets, Net 46,434us-gaap_FiniteLivedIntangibleAssetsNet   47,304us-gaap_FiniteLivedIntangibleAssetsNet
Finite-Lived Intangible Assets, Amortization Expense, Year Two 6,358us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 6,097us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree    
Finite-Lived Intangible Assets, Amortization Expense, Year Four 5,949us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour    
Finite-Lived Intangible Assets, Amortization Expense, Year Five 5,703us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive    
Diagnostics test - Thyroid [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 9 years    
Finite-Lived Intangible Assets, Gross 8,519us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticstestThyroidMember
   
Finite-Lived Intangible Assets, Accumulated Amortization 0us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticstestThyroidMember
   
Finite-Lived Intangible Assets, Net 8,519us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticstestThyroidMember
   
Diagnostics test - Pancreas [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 7 years    
Finite-Lived Intangible Assets, Gross 2,882us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticstestPancreasMember
   
Finite-Lived Intangible Assets, Accumulated Amortization 257us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticstestPancreasMember
   
Finite-Lived Intangible Assets, Net 2,625us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticstestPancreasMember
   
BioBank [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 4 years    
Finite-Lived Intangible Assets, Gross 1,575us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_BioBankMember
   
Finite-Lived Intangible Assets, Accumulated Amortization 246us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_BioBankMember
   
Finite-Lived Intangible Assets, Net 1,329us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_BioBankMember
   
Diagnostic Test - Pancreas RedPath [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 7 years    
Finite-Lived Intangible Assets, Gross 16,141us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticTestPancreasRedPathMember
   
Finite-Lived Intangible Assets, Accumulated Amortization 961us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticTestPancreasRedPathMember
   
Finite-Lived Intangible Assets, Net 15,180us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticTestPancreasRedPathMember
   
Diagnostic Test - Barrett's RedPath [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 9 years    
Finite-Lived Intangible Assets, Gross 18,351us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticTestBarrettsRedPathMember
   
Finite-Lived Intangible Assets, Accumulated Amortization 0us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticTestBarrettsRedPathMember
   
Finite-Lived Intangible Assets, Net 18,351us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_DiagnosticTestBarrettsRedPathMember
   
CLIA Diagnostic Lab [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 2 years 3 months    
Finite-Lived Intangible Assets, Gross 609us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_CLIADiagnosticLabMember
   
Finite-Lived Intangible Assets, Accumulated Amortization 179us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_CLIADiagnosticLabMember
   
Finite-Lived Intangible Assets, Net $ 430us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pdii_CLIADiagnosticLabMember