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Acquisitions and Divestitures (Additional Information - Divestitures) (Details) - USD ($)
$ in Thousands
3 Months Ended 7 Months Ended 8 Months Ended 9 Months Ended
Sep. 09, 2016
Jul. 29, 2016
Jul. 31, 2015
Sep. 30, 2016
Sep. 30, 2015
Jul. 29, 2016
Jul. 31, 2015
Sep. 09, 2016
Sep. 30, 2016
Sep. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                    
Gain (loss) on sale of businesses       $ (2,067) $ 18,070       $ (2,067) $ 18,070
Revenue       $ 530,356 $ 503,791       $ 1,582,624 $ 1,520,870
Disposed of by Sale | Hydra-Stop Product Line                    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                    
Proceeds from sale of business   $ 15,000                
Gain (loss) on sale of businesses   5,800                
Additional proceeds from sale of business   $ 2,000                
Revenue           $ 7,500        
Disposed of by Sale | Melles Griot KK Subsidiary                    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                    
Proceeds from sale of business $ 17,500                  
Gain (loss) on sale of businesses $ (7,900)                  
Revenue               $ 13,100    
Disposed of by Sale | Ismatec Product Line                    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                    
Proceeds from sale of business     $ 27,700              
Gain (loss) on sale of businesses     $ 18,100              
Revenue             $ 5,300