Business Acquisitions - Narrative (Details) $ in Thousands, ₨ in Millions, $ in Millions	3 Months Ended							6 Months Ended
	Mar. 31, 2018 USD ($)	Dec. 31, 2017 INR (₨)	Dec. 31, 2017 USD ($)	Jun. 30, 2017 CAD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2016 CAD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Business Acquisition [Line Items]
Cash Paid for Acquisitions								$ 500	$ 5,363
Goodwill			$ 86,034					84,230
Other current liabilities			29,384					$ 31,556
Mining North America [Member]
Business Acquisition [Line Items]
Cash Paid for Acquisitions	$ 500
Other current liabilities	500
Mining North America [Member] | Trademarks Formulations and Product Technology [Member}
Business Acquisition [Line Items]
Intangibles	$ 1,000
Intangible Assets, Amortizable Life	10 years
Lubricor [Member]
Business Acquisition [Line Items]
Cash Paid for Acquisitions						$ 16.0	$ 12,000
Metalworking North America [Member]
Business Acquisition [Line Items]
Cash Paid for Acquisitions				$ 7.3	$ 5,400
India [Member]
Business Acquisition [Line Items]
Cash Paid for Acquisitions		₨ 2,025.0	$ 31,800
Minority Interest Ownership Percentage			45.00%