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Software Impairment (Details) (USD $)
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3 Months Ended | |
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Mar. 31, 2015
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Mar. 31, 2014
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| Research and Development Arrangement, Contract to Perform for Others [Line Items] | ||
| Software impairment charge | $ 26,417,000us-gaap_NoncashProjectAbandonmentCosts | $ 0us-gaap_NoncashProjectAbandonmentCosts |
| Wireless, Internet, Video, Local Service, and Long Distance Customer Billing Systems [Member] | ||
| Research and Development Arrangement, Contract to Perform for Others [Line Items] | ||
| Fair Value of Future Capital Expenditures |
0gncma_FairValueofFutureCapitalExpenditures / us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis = gncma_WirelessInternetVideoLocalServiceandLongDistanceCustomerBillingSystemsMember |
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| Software impairment charge |
19,800,000us-gaap_NoncashProjectAbandonmentCosts / us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis = gncma_WirelessInternetVideoLocalServiceandLongDistanceCustomerBillingSystemsMember |
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| Internally Developed Machine-To-Machine Billing System [Member] | ||
| Research and Development Arrangement, Contract to Perform for Others [Line Items] | ||
| Software impairment charge |
$ 6,600,000us-gaap_NoncashProjectAbandonmentCosts / us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis = gncma_InternallyDevelopedMachineToMachineBillingSystemMember |
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- Definition
Fair Value of Future Capital Expenditures No definition available.
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- Definition
The expense charged against earnings to eliminate the capitalized costs of projects that have been terminated during the reporting period, which is added back to net income when calculating cash provided by (used in) operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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