Quarterly report pursuant to Section 13 or 15(d)

Acquisitions, Investments and Licenses - Acquisition Narrative (Details)

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Acquisitions, Investments and Licenses - Acquisition Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Aug. 20, 2015
May. 05, 2015
Aug. 31, 2015
May. 31, 2015
Mar. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]            
Purchase accounting adjustments         $ (321)  
Common Stock            
Business Acquisition [Line Items]            
Stock price per share   $ 13.88 $ 12.38 $ 13.88    
Bio Reference            
Business Acquisition [Line Items]            
Consideration transferred     $ 950,148      
Common stock value $ 2,259   $ 2,259      
Purchase accounting adjustments         (300)  
Purchase price allocation adjustment, accrued expenses         (500)  
Purchase price allocation adjustment, deferred tax liability         200  
Revenues         251,000  
Net income (loss)         4,600  
Useful life           13 years 260 days
Cash paid at closing date $ 950,148          
Bio Reference | Common Stock            
Business Acquisition [Line Items]            
Common stock received     76,566,147      
Acquired entity share price     $ 34.05      
EirGen            
Business Acquisition [Line Items]            
Consideration transferred   $ 133,800   $ 133,800    
Common stock value   33,600   33,600    
Revenues         4,500  
Net income (loss)         $ (400)  
Useful life           15 years
Cash paid at closing date   $ 100,200   $ 100,200    
EirGen | Common Stock            
Business Acquisition [Line Items]            
Common stock received   2,420,487   2,420,487    
Trade names | Bio Reference            
Business Acquisition [Line Items]            
Useful life           5 years
Customer relationships | Bio Reference            
Business Acquisition [Line Items]            
Useful life           19 years 100 days
Customer relationships | EirGen            
Business Acquisition [Line Items]            
Useful life           15 years 290 days
Technology | Bio Reference            
Business Acquisition [Line Items]            
Useful life           10 years 60 days
Currently Marketed Products | EirGen            
Business Acquisition [Line Items]            
Useful life           10 years