XML 79 R72.htm IDEA: XBRL DOCUMENT v2.4.0.6

Income Taxes (Details 4) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Schedule of current and non-current deferred tax assets and liabilities
Prepaid expenses and other current assets	$ 16,319	$ 12,662
Other long term assets	8,110	12,262
Other current liabilities	687
Deferred income taxes	$ 62,046	$ 69,791

X

- Definition

Deferred tax assets other noncurrent assets.

+ References

No definition available.

+ Details

Name:	glt_DeferredTaxAssetsOtherNoncurrentAssets
Namespace Prefix:	glt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Deferred tax assets prepaid expenses and other current assets.

+ References

No definition available.

+ Details

Name:	glt_DeferredTaxAssetsPrepaidExpensesAndOtherCurrentAssets
Namespace Prefix:	glt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Deferred tax liabilities other current liabilities.

+ References

No definition available.

+ Details

Name:	glt_DeferredTaxLiabilitiesOtherCurrentLiabilities
Namespace Prefix:	glt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

+ Details

Name:	us-gaap_DeferredTaxAssetsLiabilitiesNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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