| **Selected Quarterly Financial Data (Unaudited)**            | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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| **Selected Quarterly Financial Data (Unaudited) [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| Selected Quarterly Financial Data (Unaudited) [Text Block]   | (14)       Selected Quarterly Financial Data (Unaudited)

The following is a summary of unaudited quarterly results of operations for the years ended December 31,2012 and 2011(amounts in thousands, except per share amounts):
   FirstSecondThirdFourth QuarterQuarterQuarterQuarter2012     Total revenues$ 171,907 176,104 178,494 183,676Operating income$ 19,685 24,633 25,392 19,270Net income attributable to GCI$ 1,429 3,982 3,700 562Basic net income attributable   to GCI per common share$ 0.03 0.10 0.090.01Diluted net income attributable  to GCI per common share1$ 0.03 0.09 0.090.01       2011     Total revenues$ 164,777 168,089 177,703 168,812Operating income$ 20,262 22,300 31,933 16,030Net income (loss) attributable to GCI2$ 1,399 (2,043) 7,239 (870)Basic net income (loss) attributable   to GCI per common share  $ 0.03 (0.04) 0.16 (0.02)Diluted net income (loss) attributable  to GCI per common share1,2$ 0.02 (0.04) 0.15 (0.02)       1Due to rounding, the sum of quarterly diluted net income attributable to GCI per common share amounts does not agree to total year diluted net income attributable to GCI per common share.2Due to the immaterial error correction discussed in Note 1(af), some amounts are revised from prior period financial statements. |

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| - Definition
The entire disclosure for the quarterly financial data in the annual financial statements.  The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.
+ References
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