XML 46 R32.htm IDEA: XBRL DOCUMENT v2.4.0.8

Interest Expense (Tables)

3 Months Ended

Mar. 31, 2014

Interest and Debt Expense [Abstract]

Schedule Of Interest Expense

	For the Three Months Ended
	March 31,
	2013				2014
	(Dollars in thousands)
Interest incurred on debt	$	5,449			$	5,322
Amortization of discount on Senior Subordinated Notes	2,801				2,997
Amortization of debt issuance costs	555				633
Supply Chain Financing mark-up	203				47
Total interest expense	$	9,008			$	8,999

X

- Definition

Schedule of Interest Expense [Table Text Block]

+ References

No definition available.

+ Details

Name:	gti_ScheduleOfInterestExpenseTableTextBlock
Namespace Prefix:	gti_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_InterestAndDebtExpenseAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration