CONSOLIDATED INCOME STATEMENTS (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues:
Non-related party	$ 850,656gciinc_TradeRevenue	$ 782,971gciinc_TradeRevenue	$ 710,181gciinc_TradeRevenue
Related party	59,542us-gaap_RevenueFromRelatedParties	28,677us-gaap_RevenueFromRelatedParties	0us-gaap_RevenueFromRelatedParties
Total revenues	910,198us-gaap_SalesRevenueNet	811,648us-gaap_SalesRevenueNet	710,181us-gaap_SalesRevenueNet
Cost of goods sold (exclusive of depreciation and amortization shown separately below):
Non-related party	291,770gciinc_CostandExpensesTrade	275,701gciinc_CostandExpensesTrade	247,501gciinc_CostandExpensesTrade
Related party	10,934us-gaap_CostsAndExpensesRelatedParty	4,761us-gaap_CostsAndExpensesRelatedParty	0us-gaap_CostsAndExpensesRelatedParty
Total cost of goods sold	302,704	280,462	247,501
Selling, general and administrative expenses
Non-related party	289,674	268,026	241,079
Related party	3,973	3,039	2,169
Total selling, general and administrative expenses	293,647	271,065	243,248
Depreciation and amortization expense	170,285	147,259	130,452
Operating income	143,562us-gaap_OperatingIncomeLoss	112,862us-gaap_OperatingIncomeLoss	88,980us-gaap_OperatingIncomeLoss
Other income (expense):
Interest expense (including amortization of deferred loan fees)	(72,496)us-gaap_InterestExpense	(69,725)us-gaap_InterestExpense	(67,747)us-gaap_InterestExpense
Other	(1,793)us-gaap_OtherNonoperatingIncomeExpense	(453)us-gaap_OtherNonoperatingIncomeExpense	17us-gaap_OtherNonoperatingIncomeExpense
Other expense, net	(74,289)us-gaap_NonoperatingIncomeExpense	(70,178)us-gaap_NonoperatingIncomeExpense	(67,730)us-gaap_NonoperatingIncomeExpense
Income before income tax expense	69,273	42,684	21,250
Income tax expense	(10,029)us-gaap_IncomeTaxExpenseBenefit	(10,957)us-gaap_IncomeTaxExpenseBenefit	(12,088)us-gaap_IncomeTaxExpenseBenefit
Net income	59,244us-gaap_ProfitLoss	31,727us-gaap_ProfitLoss	9,162us-gaap_ProfitLoss
Net income (loss) attributable to non-controlling interests	51,687	22,321	(511)
Net income attributable to GCI, Inc.	$ 7,557	$ 9,406	$ 9,673

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