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Network
2406404 - Disclosure - Receivables and Allowance for Doubtful Receivables (Allowance for Doubtful Receivables Rollforward) (Details)
(http://www.gci.com/role/ReceivablesAndAllowanceForDoubtfulReceivablesAllowanceForDoubtfulReceivablesRollforwardDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000808461 (http://www.sec.gov/CIK)
Receivables [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Receivables [Abstract]
 
 
 
Allowance for Doubtful Accounts Receivable [Roll Forward]
 
 
 
Balance at beginning of year
3,630,000  
4,542,000  
2,346,000  
Charged to costs and expenses
8,516,000  
6,359,000  
3,994,000  
Charged to other accounts
0  
0  
0  
Write-offs net of recoveries
7,739,000  
7,271,000  
1,798,000  
Balance at end of year
4,407,000  
 
3,630,000  
 
4,542,000