INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Acquired Intangible Assets

The following table summarizes information relating to the Company's acquired intangible assets at December 31, 2015 and 2014: 

	December 31,						Estimated
	2015			2014			Useful Lives
Gross carrying amount of amortizable intangible assets
Customer relationships	$	39,414		$	45,828		10 to 18 years
Other amortizable intangibles	57,847			50,971			3 to 28 years
	97,261			96,799
Accumulated amortization
Customer relationships	(27,778		)	(31,407		)
Other amortizable intangibles	(32,532		)	(28,611		)
	(60,310		)	(60,018		)
Amortizable intangible assets, net of accumulated amortization	36,951			36,781
Indefinite-lived cable television franchises	731,848			731,848
Trademarks and other indefinite-lived intangible assets	7,250			7,250
Goodwill	262,345			264,690
Total intangible assets, net	$	1,038,394		$	1,040,569

Amortization Expense

	December 31,
	2015		2014
Aggregate amortization expense
Years ended December 31, 2015 and 2014 (excluding impairment charges of $5,831 in 2014)	$	7,812	$	8,220
Estimated amortization expense
Year Ending December 31, 2016	$	6,968
Year Ending December 31, 2017	6,510
Year Ending December 31, 2018	5,502
Year Ending December 31, 2019	4,860
Year Ending December 31, 2020	3,923

Carrying Amount of Goodwill

The carrying amount of goodwill as of December 31, 2015 and 2014 is as follows:

	Cable		Lightpath		Other			Total
Gross goodwill as of December 31, 2014	$	234,290	$	21,487	$	342,971		$	598,748
Adjustment in connection with the purchase of noncontrolling interest in Newsday	—		—		(2,345		)	(2,345		)
Gross goodwill as of December 31, 2015	234,290		21,487		340,626			596,403
Accumulated impairment losses as of December 31, 2015 and 2014	—		—		(334,058		)	(334,058		)
	$	234,290	$	21,487	$	6,568		$	262,345