Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Information About the Company's Operating Segments - (Performance Measures) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Segment Reporting Information [Line Items]        
Revenue $ 246,892 $ 227,044 $ 707,511 $ 662,346
GCI Holdings        
Segment Reporting Information [Line Items]        
Revenue 244,266 221,028 698,408 645,218
GCI Holdings | Lease, grant, and subsidies revenue        
Segment Reporting Information [Line Items]        
Revenue 19,040 22,472 59,391 67,914
GCI Holdings | Consumer Revenue | Wireless        
Segment Reporting Information [Line Items]        
Revenue 31,334 29,509 89,598 84,506
GCI Holdings | Consumer Revenue | Data        
Segment Reporting Information [Line Items]        
Revenue 47,852 42,920 137,562 125,555
GCI Holdings | Consumer Revenue | Video        
Segment Reporting Information [Line Items]        
Revenue 23,927 21,194 65,141 63,255
GCI Holdings | Consumer Revenue | Voice        
Segment Reporting Information [Line Items]        
Revenue 3,654 4,051 11,169 12,833
GCI Holdings | Business Revenue | Wireless        
Segment Reporting Information [Line Items]        
Revenue 20,019 20,060 58,873 57,837
GCI Holdings | Business Revenue | Data        
Segment Reporting Information [Line Items]        
Revenue 89,549 69,960 245,871 201,803
GCI Holdings | Business Revenue | Video        
Segment Reporting Information [Line Items]        
Revenue 2,277 4,115 10,726 11,928
GCI Holdings | Business Revenue | Voice        
Segment Reporting Information [Line Items]        
Revenue 6,614 6,747 20,077 19,587
Corporate and other        
Segment Reporting Information [Line Items]        
Revenue $ 2,626 $ 6,016 $ 9,103 $ 17,128