Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Carrying Amount of Goodwill

The carrying amount of goodwill for each of the Company’s operating segments for the years ended December 31, 2017 and 2016 is as follows (in thousands):  

	December 31,						December 31,						December 31,
	2015		Acquisition		Impairment		2016		Acquisition		Impairment		2017
Television	$	35,912		—		—	$	35,912		4,637		—	$	40,549
Radio		—		—		—		—		—		—		—
Digital		14,169		—		—		14,169		15,839		—		30,008
Consolidated	$	50,081	$	—	$	—	$	50,081	$	20,476	$	—	$	70,557

Composition of Company's Acquired Intangible Assets and Associated Accumulated Amortization

The composition of the Company’s acquired intangible assets and the associated accumulated amortization as of December 31, 2017 and 2016 is as follows (in thousands):

			2017						2016
	Weighted average remaining life in years		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Intangible assets subject to amortization:
Television network affiliation agreements		9	$	67,489	$	55,560	$	11,929	$	65,089	$	53,492	$	11,597
Customer base		5		9,146		3,839		5,307		3,146		2,664		482
Pre-sold advertising contracts and other		6		37,755		28,233		9,522		26,655		25,614		1,041
Total assets subject to amortization:			$	114,390	$	87,632	$	26,758	$	94,890	$	81,770	$	13,120
Intangible assets not subject to amortization:
FCC licenses and spectrum usage rights								251,163						220,701
Total intangible assets							$	277,921					$	233,821

Estimated Amortization Expense

Estimated amortization expense for each of the years ended December 31, 2018 through 2022 is as follows (in thousands):

Estimated Amortization Expense		Amount
2018	$		5,800
2019			5,300
2020			3,900
2021			3,300
2022			1,900