Quarterly report pursuant to Section 13 or 15(d)

Business and Summary of Significant Accounting Principles (Diluted EPS calculations) (Details)

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Business and Summary of Significant Accounting Principles (Diluted EPS calculations) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Class of Stock [Line Items]    
Allocation of undistributed earnings for basic computation $ 2,121 $ 3,244
Common Stock - Class A [Member]
   
Class of Stock [Line Items]    
Allocation of undistributed earnings for basic computation 1,958 2,996
Reallocation of undistributed earnings as a result of conversion of Class B to Class A shares 163 248
Reallocation of undistributed earnings as a result of conversion of dilutive securities 0 0
Effect of share based compensation that may be settled in cash or shares 0 (34)
Net income adjusted for allocation of undistributed earnings and effect of share based compensation that may be settled in cash or shares 2,121 3,210
Number of shares used in basic computation 37,987 38,264
Conversion of Class B to Class A common shares outstanding 3,163 3,167
Unexercised stock options 118 173
Effect of share based compensation that may be settled in cash or shares 0 91
Number of shares used in per share computation 41,268 41,695
Diluted net income attributable to General Communication, Inc. common stockholders per common share (USD per share) $ 0.05 $ 0.08
Common Stock - Class B [Member]
   
Class of Stock [Line Items]    
Allocation of undistributed earnings for basic computation 163 248
Reallocation of undistributed earnings as a result of conversion of Class B to Class A shares 0 0
Reallocation of undistributed earnings as a result of conversion of dilutive securities    (4)
Effect of share based compensation that may be settled in cash or shares 0 0
Net income adjusted for allocation of undistributed earnings and effect of share based compensation that may be settled in cash or shares $ 163 $ 244
Number of shares used in basic computation 3,163 3,167
Conversion of Class B to Class A common shares outstanding 0 0
Unexercised stock options 0 0
Effect of share based compensation that may be settled in cash or shares 0 0
Number of shares used in per share computation 3,163 3,167
Diluted net income attributable to General Communication, Inc. common stockholders per common share (USD per share) $ 0.05 $ 0.08