Quarterly report pursuant to Section 13 or 15(d)

Acquisition - (Narrative) (Details)

v3.19.2
Acquisition - (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 09, 2018
Jun. 30, 2018
Jun. 30, 2018
GCI Liberty Inc      
Business Acquisition [Line Items]      
Net earnings (loss) from continuing operations   $ 6,000 $ 4,500
GCI Liberty Inc | HoldCo      
Business Acquisition [Line Items]      
Acquisition price $ 1,100,000    
Intangible assets subject to amortization 468,737    
Acquired goodwill deductible for income tax purposes $ 170,000    
GCI Liberty Inc | HoldCo | Tradename      
Business Acquisition [Line Items]      
Estimated useful life 10 years    
GCI Liberty Inc | HoldCo | Customer relationships      
Business Acquisition [Line Items]      
Weighted average useful life 16 years    
GCI Liberty Inc | HoldCo | Right-to-use      
Business Acquisition [Line Items]      
Weighted average useful life 8 years