|
Business and Summary of Significant Accounting Principles (Pro-Forma Information) (Details) (ACS, USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
|
ACS
|
||
| Business Acquisition [Line Items] | ||
| Pro forma consolidated revenue |
$ 897,270us-gaap_BusinessAcquisitionsProFormaRevenue / us-gaap_BusinessAcquisitionAxis = gncma_AlaskaCommunicationsSystemsMember |
$ 848,676us-gaap_BusinessAcquisitionsProFormaRevenue / us-gaap_BusinessAcquisitionAxis = gncma_AlaskaCommunicationsSystemsMember |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|