| **Long-Term Debt**             | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        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| **Debt Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    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| Long-Term Debt                 | Long-Term DebtAmended Senior Credit FacilityOn February 2, 2015, GCI Holdings, Inc. ("Holdings"), our wholly owned subsidiary, entered into a Fourth Amended and Restated Credit and Guarantee Agreement with MUFG Union Bank, N.A., Suntrust Bank, Bank of America, N.A., as documentation agent, and Credit Agricole Corporate and Investment Bank, as administrative agent ("Amended Senior Credit Facility"). The Amended Senior Credit Facility added a $275.0 million Term B loan to the existing Senior Credit Facility described in Note 6(c) of our December 31, 2014 annual report on Form 10-K.  The Amended Senior Credit Facility was subsequently amended on August 3, 2015 ("First Amendment").Under the Amended Senior Credit Facility and First Amendment, the interest rate for the Term B loan is London Interbank Offered Rate ("LIBOR") plus 3.25%, with a 0.75% LIBOR floor. The Term B loan requires principal payments of 0.25% of the original principal amount on the last day of each calendar quarter with the full amount maturing on February 2, 2022 or December 3, 2020 if our Senior Notes due 2021 are not refinanced prior to such date.  The interest rate, maturity, and other terms of the existing Senior Credit Facility as described in Note 6(c) of our December 31, 2014 annual report on Form 10-K did not change as a result of this amendment.In connection with the Amended Senior Credit Facility and First Amendment, we paid loan fees and other expenses of $6.2 million that were deferred and are being amortized over the life of the Amended Senior Credit Facility.Searchlight NoteOn February 2, 2015, we sold an unsecured promissory note to an affiliate of Searchlight Capital, L.P. ("Searchlight") in the principal amount of $75.0 million at an issue price of 100% that will mature on February 2, 2023 and bears interest at a rate of 7.5% per year ("Searchlight Note"). We may not prepay the Searchlight Note prior to February 2, 2019. On July 13, 2015, we amended the Searchlight transaction documents to permit Searchlight to pledge the Searchlight Note and related stock appreciation rights, subject to our right to redeem the Searchlight Note for 50% of its then current outstanding balance in the event a lender attempts to enforce its rights with respect to such pledged collateral. In conjunction with the Searchlight Note, we entered into a stock appreciation rights agreement pursuant to which we issued to Searchlight three million stock appreciation rights which entitles Searchlight to receive, upon exercise, an amount payable at our election in either cash or shares of GCI's Class A common stock equal in value to the excess of the fair market value of a share of GCI Class A common stock on the date of exercise over the price of $13.00.  We allocated the $75.0 million in total proceeds received to the stock appreciation rights based on the fair value of the stock appreciation rights on the day of issuance with the remainder allocated to the Searchlight Note. The allocation resulted in a $21.7 million discount for the Searchlight Note that will be amortized over the term of the note using the effective interest method.  Please see note 5 for additional information on the stock appreciation rights.We have the option to pay the annual interest obligation on the Searchlight Note in cash or by capitalizing such interest and adding it to the outstanding principal amount of the note. If we elect to capitalize interest in a given year, we are also required to issue additional stock appreciation rights in the amount of four hundredths of a stock appreciation right for each dollar of interest being capitalized.Senior NotesOn April 1, 2015 (“Closing Date”), GCI, Inc. our wholly owned subsidiary, completed an offering of $450.0 million in aggregate principal amount of 6.875% Senior Notes due 2025 (“2025 Notes”) at an issue price of 99.105%. We used the net proceeds from this offering to repay and retire all $425.0 million of our outstanding senior unsecured notes due 2019 (“2019 Notes”).At any time before April 15, 2020, the 2025 Notes are redeemable at our option, in whole or in part, on not less than thirty nor more than sixty days’ notice, at a redemption price equal to 100% of the principal amount of the 2025 Notes, plus a premium calculated as defined in the 2025 Notes agreement, and accrued and unpaid interest (if any) to the date of redemption.At any time on or after April 15, 2020, the 2025 Notes are redeemable at our option, in whole or in part, on not less than thirty nor more than sixty days’ notice, at the following redemption prices (expressed as percentages of principal amount), plus accrued and unpaid interest (if any) to the date of redemption:If redeemed during the twelve month period commencing April 15 of the year indicated:Redemption Price2020103.438%2021102.292%2022101.146%2023 and thereafter100.000%The 2025 Notes mature on April 15, 2025. Semi-annual interest payments are payable on April 15 and October 15, beginning on October 15, 2015. The 2025 Notes were issued pursuant to an Indenture, dated as of April 1, 2015, between us and MUFG Union Bank, N.A., as trustee.We are not required to make mandatory sinking fund payments with respect to the 2025 Notes.Upon the occurrence of a change of control, each holder of the 2025 Notes will have the right to require us to purchase all or any part of such holder’s 2025 Notes at a purchase price equal to 101% of the principal amount of such 2019 Notes, plus accrued and unpaid interest on such 2025 Notes, if any.  If we or certain of our subsidiaries engage in asset sales, we must generally either invest the net cash proceeds from such sales in our business within a period of time, prepay debt under any outstanding credit facility, or make an offer to purchase a principal amount of the 2025 Notes equal to the excess net cash proceeds, with the purchase price equal to 100% of their principal amount, plus accrued and unpaid interest, if any.The 2025 Notes are senior unsecured obligations which rank equally in right of payment with our existing and future senior unsecured debt, including our 6.75% Senior Notes due 2021, and senior in right of payment to all future subordinated indebtedness.The covenants in the indenture restrict GCI, Inc. and certain of its subsidiaries from incurring additional debt or entering into sale and leaseback transactions; paying dividends or distributions on capital stock or repurchase capital stock; issuing stock of subsidiaries; making certain investments; creating liens on assets to secure debt; entering into transactions with affiliates; merging or consolidating with another company; and transferring and selling assets. These covenants are subject to a number of limitations and exceptions, as further described in the 2025 Notes indenture.We paid closing costs totaling $7.9 million in connection with the offering, which were recorded as deferred loan costs and are being amortized over the term of the 2025 Notes. We recorded a $27.7 million loss on extinguishment of debt in our Consolidated Statements of Operations for the nine months ended September 30, 2015. Included in the loss was $20.2 million in call premium payments to redeem our 2019 Notes, $5.4 million in unamortized 2019 Notes deferred loan costs, and $2.1 million for the unamortized portion of the 2019 Notes original issue discount. |

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| - Definition
The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5
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