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Subsequent Events	9 Months Ended
	Sep. 30, 2018
Subsequent Events
Subsequent Events	13.  Subsequent Event On October 23, 2018, we purchased the remaining 40% noncontrolling interest of Acero Prime, S. de R.L. de C.V., a toll processor in Mexico, which increased our ownership from 60% to 100%.

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- Definition

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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