Acquisitions (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisitions [Line Items]
Business Combination, Acquisition Related Costs		$ 2.7	$ 2.7
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 1.3	47.9	347.3
Gas and Fluid Handling [Member]
Business Acquisitions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 196.0
Goodwill, Purchase Accounting Adjustments	1.3
Fabrication Technology [Member]
Business Acquisitions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 26.0
Victor Technologies Holdings, Inc. [Member]
Business Acquisitions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired			$ 948.8
Business Acquisition, Effective Date of Acquisition			Apr. 14, 2014
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			$ 35.9