| Component: (Network and Table) | |
|---|---|
| Network | 2316301 - Disclosure - Contingencies (Tables) (http://www.graftech.com/role/ContingenciesTables) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000931148 (http://www.sec.gov/CIK) |
| Loss Contingency [Abstract] | Period [Axis] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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2016-01-01 - 2016-12-31 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Loss Contingency [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule Of Product Warranties Accrual | Claims accrued but not yet paid and the related activity within the reserve for 2015 and 2016 are as follows:
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