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Subsequent Event (Details)
 6 Months Ended
Jun. 30, 2015
Subsequent Event [Abstract]  
Subsequent Event, Description On July 1, 2015, the Company acquired 100% of the equity interests of Thermax, Inc. (“Thermax”) for an initial purchase price of $25,012, subject to working capital adjustments, and contingent consideration up to $11,288 to be paid over four years based on the achievement of certain earnings targets. Thermax, headquartered in Dartmouth, Massachusetts, designs and sells cryogenic fluid vaporizers and other ambient and powered vaporizer products utilized in industrial gas, petrochemical, and liquefied natural gas applications. Thermax’s results will be included in the Company’s D&S segment.