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Company's Investments Owned (Detail)
Dec. 28, 2014
Investment Ponderay Newsprint Company  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 13.50%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_InvestmentPonderayNewsprintCompanyMember
Investment Captivate  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 16.74%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_InvestmentCaptivateMember
Investment California Newspapers Partnership  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 19.49%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_InvestmentCaliforniaNewspapersPartnershipMember
Investment Wanderful Media, LLC  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 19.50%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_InvestmentWanderfulMediaLimitedLiabilityCorporationMember
Investment 4 INFO  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 24.53%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_Investment4INFOMember
Investment Livestream  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 27.73%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_InvestmentLivestreamMember
Investment Pearl, LLC  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 32.10%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_InvestmentPearlLimitedLiabilityCompanyMember
Investment Homefinder.com  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 33.33%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_InvestmentHomefinderDotComMember
Investment Topix  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 33.71%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_InvestmentTopixMember
Investment Garnet Media  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 34.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_InvestmentGarnetMediaMember
Investment Texas-New Mexico Newspapers Partnership  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 40.64%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_InvestmentTexasNewMexicoNewspapersPartnershipMember
Investment TNI Partners  
Schedule of Equity Method Investments [Line Items]  
Equity Method Investment, Ownership Percentage 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ invest_InvestmentAxis
= gci_InvestmentTNIPartnersMember