Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Oct. 31, 2014
Jun. 30, 2015
Jun. 30, 2015
Dec. 31, 2014
Business Acquisition [Line Items]        
Litigation Settlement, Amount $ 3,000   $ 2,800  
Business Combination, Indemnification Assets, Amount as of Acquisition Date $ 2,500      
Payments for Legal Settlements     300  
Settlement Liabilities, Current   $ 500 500 $ 500
Regulatory Liability, Noncurrent   $ 2,250 $ 2,250 2,500
Letters of Credit Outstanding, Amount       $ 1,400
Common Stock, Par Value   $ 0.01 $ 0.01 $ 0.01
RedPath Integrated Pathology, Inc [Member]        
Business Acquisition [Line Items]        
Adjustments to Additional Paid in Capital, Other   $ 6,100    
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares 500,000      
Stock Issued During Period, Value, Treasury Stock Reissued   $ 6,100    
Common Stock, Par Value   $ 0.0001 $ 0.0001