XML 50 R37.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Supplementary Balance Sheet Detail (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Balance Sheet Related Disclosures [Abstract] |
Schedule Of Amounts Recognized In Balance Sheet | The following tables present supplementary balance sheet details:
| At December 31,
2015 |  | 2016
| (Dollars in thousands)
Inventories: |  |  |
Raw materials and supplies | $ | 66,201 |  |  | $ | 54,469 |
Work in process | 89,453 |  |  | 52,379 |
Finished goods | 62,476 |  |  | 49,263 |
| 218,130 |  |  | 156,111 |
Prepaid expenses and other current assets: |  |  |
Prepaid expenses | $ | 9,041 |  |  | $ | 6,096 |
Value added tax and other indirect taxes receivable | 10,069 |  |  | 12,984 |
Other current assets | 2,040 |  |  | 2,585 |
| $ | 21,150 |  |  | $ | 21,665 |
Property, plant and equipment: |  |  |
Land and improvements | $ | 44,052 |  |  | $ | 43,737 |
Buildings | 55,843 |  |  | 55,440 |
Machinery and equipment and other | 431,226 |  |  | 460,892 |
Construction in progress | 40,208 |  |  | 25,635 |
| $ | 571,329 |  |  | $ | 585,704 |
Other accrued liabilities: |  |  |
Payrolls (including incentive programs) | $ | 4,028 |  |  | $ | 4,802 |
Employee compensation and benefits | 6,199 |  |  | 11,439 |
Other | 10,760 |  |  | 14,278 |
| $ | 20,987 |  |  | $ | 30,519 |
Other long term obligations: |  |  |
Postretirement benefits | $ | 20,102 |  |  | $ | 19,002 |
Pension and related benefits | 55,364 |  |  | 45,876 |
Other | 18,852 |  |  | 17,270 |
| $ | 94,318 |  |  | $ | 82,148 |
Schedule Of Analysis Of The Allowance For Doubtful Accounts | The following table presents an analysis of the allowance for doubtful accounts:
| 2014 |  | For the Period January 1 through August 14, 2015 |  | For the Period August 15 through December 31, 2015 |  | 2016
| (Dollars in thousands)
Balance at beginning of year | $ | 6,262 |  |  | $ | 6,969 |  |  | $ | — |  |  | $ | 244 |
Additions | 3,520 |  |  | 85 |  |  | 244 |  |  | 129 |
Deductions | (2,813 | ) |  | (1,177 | ) |  | — |  |  | (47 | )
Balance at end of year | $ | 6,969 |  |  | $ | 5,877 |  |  | $ | 244 |  |  | $ | 326 |

X
- Definition Allowance For Doubtful Accounts Receivable Rollforward + References No definition available. + Details
Name: | gti_AllowanceForDoubtfulAccountsReceivableRollforwardTextBlock
Namespace Prefix: | gti_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BalanceSheetRelatedDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amounts that are recognized in the balance sheet (or statement of financial position) for pension plans and/or other employee benefit plans, showing separately the assets and current and noncurrent liabilities (if applicable) recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration