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v2.4.1.9

Condensed Consolidating Financial Statements - Condensed Consolidating Balance Sheet (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014 | Mar. 31, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Assets |  |  |  |
Cash and cash equivalents | $ 71,570 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 99,837 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 74,785 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 122,882 us-gaap_CashAndCashEquivalentsAtCarryingValue
Other current assets | 478,011 us-gaap_OtherAssetsCurrent | 474,785 us-gaap_OtherAssetsCurrent |  |
Plant, equipment and timberlands, net | 662,808 us-gaap_PropertyPlantAndEquipmentNet | 697,608 us-gaap_PropertyPlantAndEquipmentNet |  |
Other assets | 274,868 glt_OtherAssetsOtherNoncurrent | 289,274 glt_OtherAssetsOtherNoncurrent |  |
Total assets | 1,487,257 us-gaap_Assets | 1,561,504 us-gaap_Assets |  |
Liabilities and Shareholders' Equity |  |  |  |
Current liabilities | 258,434 us-gaap_LiabilitiesCurrent | 279,731 us-gaap_LiabilitiesCurrent |  |
Long-term debt | 379,757 us-gaap_LongTermDebtNoncurrent | 398,878 us-gaap_LongTermDebtNoncurrent |  |
Deferred income taxes | 100,455 us-gaap_DeferredTaxLiabilitiesNoncurrent | 104,016 us-gaap_DeferredTaxLiabilitiesNoncurrent |  |
Other long-term liabilities | 125,742 us-gaap_OtherLiabilitiesNoncurrent | 129,770 us-gaap_OtherLiabilitiesNoncurrent |  |
Total liabilities | 864,388 us-gaap_Liabilities | 912,395 us-gaap_Liabilities |  |
Shareholders' equity | 622,869 us-gaap_StockholdersEquity | 649,109 us-gaap_StockholdersEquity |  |
Total liabilities and shareholders' equity | 1,487,257 us-gaap_LiabilitiesAndStockholdersEquity | 1,561,504 us-gaap_LiabilitiesAndStockholdersEquity |  |
Adjustments/ Eliminations [Member] |  |  |  |
Assets |  |  |  |
Other current assets | (348,100)us-gaap_OtherAssetsCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (427,777)us-gaap_OtherAssetsCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Investments in subsidiaries | (1,180,272)us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (1,224,411)us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Other assets | (87,293)glt_OtherAssetsOtherNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (17,980)glt_OtherAssetsOtherNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Total assets | (1,615,665)us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (1,670,168)us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Liabilities and Shareholders' Equity |  |  |  |
Current liabilities | (350,801)us-gaap_LiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (435,062)us-gaap_LiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Long-term debt | (506,032)us-gaap_LongTermDebtNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (572,579)us-gaap_LongTermDebtNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Deferred income taxes | 2,719 us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (12,289)us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Other long-term liabilities | (86,806)us-gaap_OtherLiabilitiesNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 5,779 us-gaap_OtherLiabilitiesNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Total liabilities | (940,920)us-gaap_Liabilities / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (1,014,151)us-gaap_Liabilities / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Shareholders' equity | (674,745)us-gaap_StockholdersEquity / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (656,017)us-gaap_StockholdersEquity / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Total liabilities and shareholders' equity | (1,615,665)us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (1,670,168)us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |  |
Parent Company [Member] |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 50,133 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 42,208 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 41,133 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 56,216 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other current assets | 227,159 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 218,544 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Plant, equipment and timberlands, net | 259,875 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 255,255 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Investments in subsidiaries | 802,272 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 824,480 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other assets | 126,687 glt_OtherAssetsOtherNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 121,125 glt_OtherAssetsOtherNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total assets | 1,466,126 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,461,612 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Liabilities and Shareholders' Equity |  |  |  |
Current liabilities | 434,759 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 403,662 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Long-term debt | 250,000 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 250,000 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Deferred income taxes | 48,983 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 46,483 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other long-term liabilities | 109,515 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 112,358 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total liabilities | 843,257 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 812,503 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Shareholders' equity | 622,869 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 649,109 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total liabilities and shareholders' equity | 1,466,126 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 1,461,612 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Guarantors [Member] |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 2,583 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 514 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 232 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 501 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Other current assets | 328,811 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 420,451 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Plant, equipment and timberlands, net | 961 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 991 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Investments in subsidiaries | 378,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 399,931 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Other assets | 86,808 glt_OtherAssetsOtherNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |  |
Total assets | 797,163 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 821,887 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Liabilities and Shareholders' Equity |  |  |  |
Current liabilities | 4,887 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 3,394 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Deferred income taxes | (453)us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (453)us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total liabilities | 4,434 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 2,941 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Shareholders' equity | 792,729 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 818,946 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total liabilities and shareholders' equity | 797,163 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 821,887 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Non Guarantors [Member] |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 18,854 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 57,115 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 33,420 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 66,165 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Other current assets | 270,141 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 263,567 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Plant, equipment and timberlands, net | 401,972 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 441,362 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Other assets | 148,666 glt_OtherAssetsOtherNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 186,129 glt_OtherAssetsOtherNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total assets | 839,633 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 948,173 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Liabilities and Shareholders' Equity |  |  |  |
Current liabilities | 169,589 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 307,737 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Long-term debt | 635,789 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 721,457 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Deferred income taxes | 49,206 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 70,275 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Other long-term liabilities | 103,033 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 11,633 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total liabilities | 957,617 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,111,102 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Shareholders' equity | (117,984)us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (162,929)us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total liabilities and shareholders' equity | $ 839,633 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | $ 948,173 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |

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