Goodwill and other intangible assets

The following table displays goodwill, indefinite-lived intangible assets, and amortizable intangible assets as of June 30, 2018 and December 31, 2017 (in thousands):



	June 30, 2018					Dec. 31, 2017
	Gross		Accumulated Amortization			Gross		Accumulated Amortization

Goodwill	$	2,596,505	$	—		$	2,579,417	$	—
Indefinite-lived intangibles:
Television and radio station FCC licenses	1,384,186		—			1,191,950		—
Amortizable intangible assets:
Retransmission agreements	121,594		(70,671		)	110,191		(62,355		)
Network affiliation agreements	110,390		(24,622		)	43,485		(19,371		)
Other	28,865		(7,571		)	15,763		(6,394		)
Total indefinite-lived and amortizable intangible assets	$	1,645,035	$	(102,864	)	$	1,361,389	$	(88,120	)

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 and favorable lease agreements which are amortized on a straight-line basis over their useful lives.

On February 15, 2018 we acquired a business consisting of assets in San Diego: KFMB-TV (the CBS affiliated station), KFMB-D2 (the CW station), and radio stations KFMB-AM and KFMB-FM (collectively KFMB). The estimated transaction price is $328.4 million, which includes a pending final working capital adjustment of $2.5 million. The initial transaction price of $325.9 million was paid in cash and funded through the use of available cash and borrowings under our revolving credit facility (see Note 5). 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 retransmission and network affiliation agreements. The amortizable assets will be amortized over a weighted average period of 10 years. We also recognized goodwill of $17.1 million as a result of the acquisition.

The fair value of the assets acquired and liabilities assumed were based on a preliminary valuation and, as such, our estimates and assumptions are subject to change as additional information is obtained about the facts and circumstances that existed as of the acquisition date. The primary area of purchase price allocation not yet finalized relates to income taxes.