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Acquisitions	12 Months Ended
Acquisitions	Dec. 31, 2017
Business Acquisition [Line Items]
Business Combination Disclosure [Text Block]	Acquisitions During 2015, the Company completed two acquisitions for an aggregate amount of approximately $10.0 million, net of cash acquired. The largest acquisition was the November 2015 acquisition of certain business assets of Parker-Hannifin Corporation, located in Tolleson, AZ, within the Company's Aerospace reportable segment.