Goodwill and Acquired Intangible Assets

3 Months Ended

Mar. 31, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Acquired Intangible Assets

5. Goodwill and Acquired Intangible Assets

The components of acquired intangible assets as of March 31, 2021 and December 31, 2020 were as follows:

	March 31, 2021							December 31, 2020
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Gross Carrying Amount		Accumulated Amortization			Net Carrying Value
	(in thousands)
Restaurant relationships	$	492,791	$	(165,316	)	$	327,475	$	492,791	$	(158,885	)	$	333,906
Diner acquisition		48,293		(31,982	)		16,311		48,293		(29,567	)		18,726
Developed technology		34,095		(22,534	)		11,561		34,095		(21,696	)		12,399
Other		2,918		(2,805	)		113		2,918		(2,787	)		131
Total amortizable intangible assets		578,097		(222,637	)		355,460		578,097		(212,935	)		365,162
Indefinite-lived trademarks		89,676		—			89,676		89,676		—			89,676
Total acquired intangible assets	$	667,773	$	(222,637	)	$	445,136	$	667,773	$	(212,935	)	$	454,838

Amortization expense for acquired intangible assets recognized within depreciation and amortization on the condensed consolidated statements of operations was $9.7 million and $12.7 million for the three months ended March 31, 2021 and 2020, respectively.

During the three months ended March 31, 2021, there were no changes in the carrying amount of goodwill of $1,008.0 million.

Estimated future amortization expense of acquired intangible assets as of March 31, 2021 was as follows:

	(in thousands)
The remainder of 2021	$	29,107
2022		36,847
2023		30,348
2024		28,141
2025		25,736
Thereafter		205,281
Total	$	355,460