| **Business and Summary of Significant Accounting Principles (Tables)**                                 | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
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| **Business and Summary of Significant Accounting Policies [Abstract]**                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]          |      Three Months Ended September 30,     2012 2011     Class A Class B Class A Class B Basic net income per share:        Numerator:         Allocation of undistributed earnings$ 3,419  281 $ 6,728  511             Denominator:         Weighted average common shares  outstanding 38,600  3,170  41,768  3,175    Basic net income attributable to GCI  common stockholders per common share$ 0.09  0.09 $ 0.16  0.16             Diluted net income per share:        Numerator:         Allocation of undistributed earnings for  basic computation$ 3,419  281 $ 6,728  511  Reallocation of undistributed earnings as a  result of conversion of Class B to Class A  shares 281  -  511  -  Effect of share based compensation that may  be settled in cash or shares -  -  (495)  -  Reallocation of undistributed earnings as a  result of conversion of Class B to Class A  shares outstanding -  (2)  -  (40)   Net income adjusted for allocation of  undistributed earnings and effect of  share based compensation that may be settled  in cash or shares$ 3,700  279 $ 6,744  471             Denominator:         Number of shares used in basic computation 38,600  3,170  41,768  3,175  Conversion of Class B to Class A common  shares outstanding 3,170  -  3,175  -  Unexercised stock options 230  -  304  -  Effect of share based compensation that may  be settled in cash or shares -  -  217  - Number of shares used in per share computations 42,000  3,170  45,464  3,175    Diluted net income attributable to GCI  common stockholders per common share$ 0.09  0.09 $ 0.15  0.15     Nine Months Ended September 30,     2012 2011     Class A Class B Class A Class B Basic net income per share:        Numerator:         Allocation of undistributed earnings$ 8,420  691 $ 6,140  454             Denominator:         Weighted average common shares  outstanding 38,614  3,170  42,940  3,177    Basic net income attributable to GCI  common stockholders per common share$ 0.22  0.22 $ 0.14  0.14             Diluted net income per share:        Numerator:         Allocation of undistributed earnings for  basic computation$ 8,420  691 $ 6,140  454  Reallocation of undistributed earnings as a  result of conversion of Class B to Class A  shares 691  -  454  -  Effect of share based compensation that may  be settled in cash or shares -  -  (571)  -  Reallocation of undistributed earnings as a  result of conversion of Class B to Class A  shares outstanding -  (6)  -  (44)   Net income adjusted for allocation of  undistributed earnings and effect of  share based compensation that may be settled  in cash or shares$ 9,111  685 $ 6,023  410             Denominator:         Number of shares used in basic computation 38,614  3,170  42,940  3,177  Conversion of Class B to Class A common  shares outstanding 3,170  -  3,177  -  Unexercised stock options 235  -  348  -  Effect of share based compensation that may  be settled in cash or shares 158  -  217  - Number of shares used in per share computations 42,177  3,170  46,682  3,177    Diluted net income attributable to GCI  common stockholders per common share$ 0.22  0.22 $ 0.13  0.13 |
| Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |  Three Months Ended Nine Months Ended September 30, September 30, 2012 2011 2012 2011Shares associated with anti-dilutive  unexercised stock options  82  95  88  39Share based compensation that may  be settled in cash or shares, the effect  of which is anti-dilutive  158  -  -  -                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Schedule Of Contingent Awards [Table Text Block]                                                       |  Three Months Ended Nine Months Ended September 30, September 30, 2012 2011 2012 2011Shares associated with contingent awards  58  50  58  50                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Schedule of Stock by Class [Table Text Block]                                                          |   Class A Class B Balances at December 31, 2010 44,213  3,178 Class B shares converted to Class A 6  (6) Shares issued upon stock option exercises 157  - Share awards issued 417  - Shares retired (3,802)  - Other (25)  -  Balances at September 30, 2011 40,966  3,172       Balances at December 31, 2011 39,296  3,171 Class B shares converted to Class A 2  (2) Shares issued upon stock option exercises 284  - Share awards issued 516  - Shares retired (980)  - Shares acquired to settle minimum statutory tax  withholding requirements (292)  - Other  (8)  -  Balances at September 30, 2012 38,818  3,169                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| Excise And Sales Taxes [Table Text Block]                                                              |   Three Months Ended Nine Months Ended  September 30, September 30,  2012 2011 2012 2011 Surcharges reported gross$ 1,214  1,300  4,094  4,100                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]                          |  Consolidated Balance Sheet as of  December 31, 2011: As Previously Reported Adjustment As Revised  Property and equipment in service, net of  depreciation$ 851,705  (2,584)  849,121  Net property and equipment  894,623  (2,584)  892,039  Total assets  1,448,904  (2,584)  1,446,320  Deferred income taxes  115,296  (1,062)  114,234  Total liabilities  1,273,735  (1,062)  1,272,673  Retained earnings  99,433  (1,522)  97,911  Total GCI stockholders' equity  158,861  (1,522)  157,339  Total stockholders' equity  175,169  (1,522)  173,647  Total liabilities and stockholders' equity  1,448,904  (2,584)  1,446,320           Consolidated Income Statement for the  Three Months Ended September 30, 2011:        Depreciation and amortization expense  30,702  (49)  30,653  Operating income  31,884  49  31,933  Income before income tax expense  15,169  49  15,218  Income tax expense  7,959  20  7,979  Net income  7,210  29  7,239           Consolidated Income Statement for the  Nine Months Ended September 30, 2011:        Depreciation and amortization expense  93,054  244  93,298  Operating income  74,738  (244)  74,494  Income before income tax expense  14,141  (244)  13,897  Income tax expense  7,403  (100)  7,303  Net income  6,738  (144)  6,594  Basic net income attributable to General           Communication, Inc. common stockholders          per Class A common share  0.15  (0.01)  0.14  Basic net income attributable to General           Communication, Inc. common stockholders          per Class B common share  0.15  (0.01)  0.14           Consolidated Statement of Stockholders'  Equity for the Nine Months Ended  September 30, 2011:        Retained earnings, balance at January 1, 2011  93,607  (1,407)  92,200  Net income  6,738  (144)  6,594  Retained earnings, balance at September 30, 2011  100,345  (1,551)  98,794  Total stockholders' equity, balance at  January 1, 2011  200,506  (1,407)  199,099  Total stockholders' equity, balance at  September 30, 2011  189,616  (1,551)  188,065           Consolidated Statement of Cash Flows for the          Nine Months Ended September 30, 2011:        Net income  6,738  (144)  6,594  Depreciation and amortization expense  93,054  244  93,298  Income tax expense  7,403  (100)  7,303                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |

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| - Definition
Tabular disclosure of the surcharges assessed by a governmental authority that are directly imposed on a revenue-producing transaction between us and a customer.
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| - Definition
Shares associated with contingent awards which have been excluded from the computations of diluted earnings per share because the contingencies of the awards have not been met.
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| - Definition
Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.
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| - Definition
Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from continuing operations, including the effect that has been given to preferred dividends.
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| - Definition
Tabular disclosure of prior period adjustments to previously issued financial statements including (1) the effect of the correction on each financial statement line item and any per-share amounts affected for each prior period presented (2) the cumulative effect of the change on retained earnings or other appropriate components of equity or net assets in the statement of financial position, as of the beginning of the earliest period presented, and (3) the effect of the prior period adjustments (both gross and net of applicable income tax) on the net income of each prior period presented in the entity's annual report for the year in which the adjustments are made.
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| - Definition
Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information.  Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding.
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