Quarterly report pursuant to Section 13 or 15(d)

Earnings (Loss) per Common Share (Basic Net Income (Loss) per Share) (Details)

v3.7.0.1
Earnings (Loss) per Common Share (Basic Net Income (Loss) per Share) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Numerator:        
Net income (loss) available to common stockholders $ (8,882) $ 3,415 $ (64,011) $ 4,514
Common Stock - Class A [Member]        
Numerator:        
Net income (loss) available to common stockholders (8,086) 3,134 (58,207) 4,144
Less: Undistributed net income allocable to participating securities 0 (167) 0 (210)
Undistributed net income (loss) allocable to common stockholders $ (8,086) $ 2,967 $ (58,207) $ 3,934
Denominator:        
Weighted average common shares outstanding 31,276 33,308 31,248 33,502
Basic net income (loss) attributable to GCI common stockholders per common share (USD per share) $ (0.26) $ 0.09 $ (1.86) $ 0.12
Common Stock - Class B [Member]        
Numerator:        
Net income (loss) available to common stockholders $ (796) $ 281 $ (5,804) $ 370
Less: Undistributed net income allocable to participating securities 0 0 0 0
Undistributed net income (loss) allocable to common stockholders $ (796) $ 281 $ (5,804) $ 370
Denominator:        
Weighted average common shares outstanding 3,078 3,155 3,116 3,155
Basic net income (loss) attributable to GCI common stockholders per common share (USD per share) $ (0.26) $ 0.09 $ (1.86) $ 0.12