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Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On April 29, 2015, the Company signed a letter of intent with an affiliate of Brookfield Asset Management (“Brookfield”) for the potential sale of $150 million of 7% convertible preferred shares in a private offering. The convertible preferred shares would be issued in two series. One series would be immediately convertible into common shares equal to up to 19.9% of the currently outstanding shares of common stock at a conversion price of $5.00 per common share. The second series is proposed on the same economic terms and would become convertible into common shares equal to up to 2.0% of the currently outstanding shares upon approval by the stockholders in accordance with New York Stock Exchange requirements. On April 29, 2015, the Company signed a letter of intent for a potential tender offer by Brookfield to purchase up to all of the outstanding shares of GrafTech common stock at the purchase price of $5.05 per share.

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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.

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