Goodwill and other intangible assets

The following table displays goodwill, indefinite-lived intangible assets, and amortizable intangible assets as of December 31, 2018 and December 31, 2017 (in thousands).



	Gross		Accumulated Amortization			Net
Dec. 31, 2018
Goodwill	$	2,596,863	$	—		$	2,596,863
Indefinite-lived intangibles:
Television station FCC licenses	1,384,186		—			1,384,186
Amortizable intangible assets:
Retransmission agreements	121,594		(79,274		)	42,320
Network affiliation agreements	110,390		(30,802		)	79,588
Other	28,865		(8,882		)	19,983
Total	$	4,241,898	$	(118,958	)	$	4,122,940
Dec. 31, 2017
Goodwill	$	2,579,417	$	—		$	2,579,417
Indefinite-lived intangibles:
Television station FCC licenses	1,191,950		—			1,191,950
Amortizable intangible assets:
Retransmission agreements	110,191		(62,355		)	47,836
Network affiliation agreements	43,485		(19,371		)	24,114
Other	15,763		(6,394		)	9,369
Total	$	3,940,806	$	(88,120	)	$	3,852,686

Our retransmission agreements and network affiliation agreements are amortized on a straight-line basis over their estimated useful lives. Other intangibles primarily include customer relationships which are amortized on a straight-line basis over their useful lives.

On February 15, 2018, we acquired KFMB for $328.4 million in cash, which included a final working capital payment of $2.5 million that we made to the seller in the third quarter of 2018. The purchase price was paid in cash and funded through the use of available cash and borrowings under our revolving credit facility. In connection with this acquisition, we recorded indefinite-lived intangible assets for FCC licenses of $192.2 million and amortizable intangible assets of $91.4 million, primarily related to network affiliation agreement and retransmission consent contracts. The amortizable assets will be amortized over a weighted average period of 10 years. We also recognized goodwill of $17.4 million as a result of the acquisition, all of which is deductible for tax purposes. There were no other changes in our goodwill balance in 2018 or 2017. We completed purchase accounting for the transaction in the third quarter of 2018.

During the second quarter of 2017, we recorded a $332.9 million goodwill impairment charge within discontinued operations related to our former CareerBuilder reporting unit. In 2016, we performed an interim goodwill impairment test for a small reporting unit in our former Digital segment. As a result of this test, we recorded a non-cash goodwill impairment charge of $15.2 million, representing the full amount of goodwill associated with this reporting unit.

The following table shows the projected annual amortization expense related to amortizable intangible assets existing as of December 31, 2018 (in thousands):



2019	$	30,803
2020	27,106
2021	21,129
2022	18,005
2023	11,455
Thereafter	33,393
Total	$	141,891