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Business Acquisitions - Narratives (Details) - USD ($)
$ in Thousands
Oct. 28, 2015
Dec. 31, 2015
Minimum    
Business Acquisition    
Projected market value   $ 150,000
Maximum    
Business Acquisition    
Projected market value   $ 300,000
Filter Sensing Technologies Inc.    
Business Acquisition    
Total cash purchase price $ 1,855  
Fair value of contingent consideration $ 1,550