	December 31,
	2020			2019
	(In thousands)
Goodwill	$	2,091,278		$	2,084,564

Indefinite-lived intangible assets:
Detroit development rights	$	98,098		$	98,098
MGM Northfield Park and Empire City racing and gaming licenses		280,000			280,000
Trademarks and other		299,238			300,212
Total indefinite-lived intangible assets		677,336			678,310
Finite-lived intangible assets:
MGM Grand Paradise gaming subconcession		4,541,990			4,519,558
Less: Accumulated amortization		(1,697,481	)		(1,514,772	)
		2,844,509			3,004,786
MGM National Harbor and MGM Springfield gaming licenses		106,600			106,600
Less: Accumulated amortization		(19,102	)		(11,996	)
		87,498			94,604
Other finite-lived intangible assets		60,649			79,197
Less: Accumulated amortization		(26,244	)		(30,393	)
		34,405			48,804
Total finite-lived intangible assets, net		2,966,412			3,148,194
Total other intangible assets, net	$	3,643,748		$	3,826,504

Goodwill. A summary of changes in the Company’s goodwill by reportable segment is as follows for 2020 and 2019:

	2020
	Balance at January 1		Acquisitions		Reclassifications		Currency exchange		Balance at December 31
	(In thousands)
Goodwill, net by segment:
Las Vegas Strip Resorts	$	30,452	$	—	$	—	$	—	$	30,452
Regional Operations		701,463		—		—		—		701,463
MGM China		1,352,649		—		—		6,714		1,359,363
	$	2,084,564	$	—	$	—	$	6,714	$	2,091,278

	2019
	Balance at January 1		Acquisitions		Reclassifications			Currency exchange		Balance at December 31
	(In thousands)
Goodwill, net by segment:
Las Vegas Strip Resorts	$	70,975	$	—	$	(40,523	)	$	—	$	30,452
Regional Operations		386,892		256,133		58,438			—		701,463
MGM China		1,345,610		—		—			7,039		1,352,649
Corporate and other		17,915		—		(17,915	)		—		—
	$	1,821,392	$	256,133	$	—		$	7,039	$	2,084,564

Goodwill was recognized in 2019 related to the acquisition of Empire City, which is included in Regional Operations, as further discussed in Note 4.

The goodwill balance attributable to MGM Northfield Park, which was previously included within Corporate and other in 2018, was reclassed to Regional Operations in 2019 in connection with the Company’s acquisition of the membership interests of Northfield in 2019 as further discussed in Note 4. The presentation of the goodwill balance attributable to Gold Strike Tunica was reclassified in 2019 from Las Vegas Strip Resorts to Regional Operations.

MGM Grand Paradise gaming subconcession. Pursuant to the agreement dated June 19, 2004 between MGM Grand Paradise and Sociedade de Jogos de Macau, S.A. (“SJMSA”), a gaming subconcession was acquired by MGM Grand Paradise for the right to operate casino games of chance and other casino games for a period of 15 years commencing on April 20, 2005. In March 2019, MGM Grand Paradise and SJMSA entered into a Subconcession Extension Contract (the “Extension Agreement”), pursuant to which the gaming subconcession was extended to June 26, 2022, which coincides with the current expiration of all the other concessionaires and subconcessionaires. MGM Grand Paradise paid the government of Macau approximately $25 million and paid SJMSA approximately $2 million as a contract premium for such extension. The Company cannot provide any assurance that the gaming subconcession will be extended beyond the current terms; however, management believes that the gaming subconcession will be extended, given that the Cotai land concession agreement with the government extends significantly beyond the gaming subconcession. As such, as of December 31, 2020, the Company amortizes the gaming subconcession intangible asset on a straight-line basis over the initial term of the Cotai land concession, ending in January 2038.

MGM National Harbor and MGM Springfield gaming licenses. The license fee paid to the State of Maryland of $22 million is considered a finite-lived intangible asset that is amortized on a straight-line basis over a period of its initial term of 15 years, beginning in December 2016, when MGM National Harbor started operations. The license fee paid to the State of Massachusetts of $85 million is considered a finite-lived intangible asset that is amortized over a period of 15 years, beginning in August 2018, when MGM Springfield started operations.

Total amortization expense related to intangible assets was $194 million, $192 million and $176 million for 2020, 2019, and 2018, respectively. As of December 31, 2020, estimated future amortization is as follows:


Years ending December 31,	(In thousands)
2021	$	197,104
2022		190,981
2023		178,672
2024		176,685
2025		174,900
Thereafter		2,048,070
	$	2,966,412