CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interests [Member]
Beginning balances, total stockholders' equity at Dec. 31, 2011	$ 171,990	$ 206,622	$ 61,841	$ (112,781)	$ 16,308
Beginning balance, shares at Dec. 31, 2011		100,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,580			9,111	(531)
Distribution to General Communication, Inc.	(13,189)			(13,189)
Contribution from General Communication, Inc.	5,365		4,569	796
Ending balances, total stockholders' equity at Sep. 30, 2012	172,746	206,622	66,410	(116,063)	15,777
Ending balance, shares at Sep. 30, 2012		100,000
Beginning balances, total stockholders' equity at Dec. 31, 2012	185,530	206,622	67,493	(120,843)	32,258
Beginning balance, shares at Dec. 31, 2012	100	100,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	27,202			16,329	10,873
Distribution to General Communication, Inc.	(15,518)			(15,518)
Contribution from General Communication, Inc.	9,754		9,754
Investment by non-controlling interest	272,198				272,198
Distribution to non-controlling interest	(9,511)				(9,511)
Ending balances, total stockholders' equity at Sep. 30, 2013	$ 469,655	$ 206,622	$ 77,247	$ (120,032)	$ 305,818
Ending balance, shares at Sep. 30, 2013	100	100,000