Equity Method Investments (Restated) - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended		9 Months Ended			1 Months Ended				9 Months Ended	1 Months Ended	2 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended
	Jul. 19, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jul. 22, 2013 Subsidiaries	Jul. 22, 2013 2010 Senior Credit Facility Term Loan Due 2016 [Member]	Sep. 30, 2013 GCI Member [Member]	Sep. 30, 2013 ACS Member [Member]	Sep. 30, 2013 Interest Rate Swaps [Member]	Sep. 30, 2013 TekMate, LLC [Member]	Sep. 30, 2013 Alaska Wireless Network, LLC [Member]	Sep. 30, 2013 Alaska Wireless Network, LLC [Member]	Sep. 30, 2013 Alaska Wireless Network, LLC [Member]	Sep. 30, 2013 Alaska Wireless Network, LLC [Member]	Sep. 30, 2013 GCI Member [Member]
Schedule Of Results Related To Equity Accounted Investees [Line Items]
Percentage ownership interest in equity method investment											49.00%	33.00%	33.00%	33.00%	33.00%
Interest in equity method investees' income(loss)			$ 45		$ 45						$ 3
Undistributed earnings											0
Number of subsidiaries under Contribution Agreement						2
Percentage ownership owned by subsidiaries in AWN								66.67%	33.33%
Cash payments to purchased assets				100,000
Representation of GCI on AWN Board				Representation of one of three seats on AWN's Board
Operating agreement, Cumulative annual distribution in each of first eight quarters		12,500		12,500
Operating agreement, Cumulative annual distribution in second eight quarters		11,250		11,250
Aggregate adjustment capped		21,800		21,800
Estimated fair value		266,000		266,000
Carrying value of wireless switching and transmission equipment		87,542		87,542
Deferred revenue expected recognition period				20 years
Gain on sale of assets				207,318										83,200		207,318
Interest in equity method investees' adjusted free cash flow												4,167	5,389		9,556
Excess of ACS's investment over the Company's share of net assets												47,278	47,278	47,278	47,278
Equity-method goodwill percentage															54.90%
Principal payment on the term loan							65,000
Termination of floating-to-fixed interest rate swaps										192,500
Notional amount of floating-to-fixed interest rate swaps										385,000
Termination charges		4,073
Accumulated other comprehensive loss, amount of reclassification	$ 707	$ 707		$ 1,507