Annual report pursuant to Section 13 and 15(d)

Information About the Company's Operating Segments (Performance Measures) (Details)

v3.10.0.1
Information About the Company's Operating Segments (Performance Measures) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Segment Reporting Information [Line Items]                      
Revenue $ 234,922 $ 210,146 $ 233,490 $ 61,204 $ 8,178 $ 5,493 $ 6,177 $ 3,969 $ 739,762 $ 23,817 $ 22,552
Adjusted OIBDA                 193,101 (25,762) (16,063)
Operating Segments                      
Segment Reporting Information [Line Items]                      
Revenue                 762,018 36,909 53,138
Adjusted OIBDA                 189,573 (42,178) (27,505)
Operating Segments | GCI Holdings                      
Segment Reporting Information [Line Items]                      
Revenue                 715,842 0 0
Adjusted OIBDA                 217,832 0 0
Operating Segments | Liberty Broadband                      
Segment Reporting Information [Line Items]                      
Revenue                 22,256 13,092 30,586
Adjusted OIBDA                 (3,528) (16,416) (11,442)
Operating Segments | Corporate and other                      
Segment Reporting Information [Line Items]                      
Revenue                 23,920 23,817 22,552
Adjusted OIBDA                 (24,731) (25,762) (16,063)
Consolidation, Eliminations                      
Segment Reporting Information [Line Items]                      
Revenue                 (22,256) (13,092) (30,586)
Adjusted OIBDA                 $ 3,528 $ 16,416 $ 11,442