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Business Acquisitions and Divestiture - Blue Stream Purchase Price Allocation (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Jun. 27, 2016
Business Acquisition [Line Items]      
Goodwill $ 800,247 $ 787,517  
Blue Stream Laboratories      
Business Acquisition [Line Items]      
Trade receivables, contractual amount     $ 1,104
Trade receivables     1,104
Other current assets (excluding cash)     15
Property, plant and equipment     912
Other long-term assets     187
Definite-lived intangible assets     1,230
Goodwill     10,334
Current liabilities     (1,132)
Long-term liabilities     (901)
Total purchase price allocation     $ 11,749