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BUSINESS ACQUISITIONS - Blue Stream Laboratories, Allocation of Purchase Price (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Jun. 27, 2016
Dec. 26, 2015
Dec. 27, 2014
Business Acquisition [Line Items]        
Goodwill $ 787,517   $ 438,829 $ 321,077
Blue Stream        
Business Acquisition [Line Items]        
Acquired 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   10,477    
Current liabilities   (1,132)    
Long-term liabilities   (1,044)    
Total purchase price allocation   $ 11,749