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Related Parties	12 Months Ended
Related Parties	Dec. 31, 2014
Related Parties [Abstract]
Related Parties	NOTE 26. RELATED PARTIES We purchase grid products from WAVE, our 50%-owned joint venture with Worthington Industries. The total amount of these purchases was $85.4 million in 2014, $88.9 million in 2013 and $89.3 million in 2012. We also provide certain selling, promotional and administrative processing services to WAVE for which we receive reimbursement. Those services amounted to $14.7 million in 2014, $14.9 million in 2013, and $14.6 million in 2012. The net amount due to WAVE from us for all of our relationships was $8.5 million at the end of 2014 and the net amount due to us from WAVE at the end of 2013 was $1.3 million. See Note 9 to the Consolidated Financial Statements for additional information.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

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