Intangible Assets

12 Months Ended

Dec. 31, 2020

Intangible Assets Net Excluding Goodwill [Abstract]

Note 10. INTANGIBLE ASSETS

Intangible assets consisted of the following (in thousands):

	December 31, 2020							December 31, 2019
	Gross Amount		Accumulated Amortization			Net Carrying Amount		Gross Amount		Accumulated Amortization			Net Carrying Amount
Wholesale fuel supply contracts/rights	$	187,643	$	(95,694	)	$	91,949	$	124,479	$	(79,791	)	$	44,688
Trademarks/licenses		1,898		(1,115	)		783		1,078		(1,072	)		6
Covenant not to compete		4,552		(4,372	)		180		4,552		(4,250	)		302
Total intangible assets	$	194,093	$	(101,181	)	$	92,912	$	130,109	$	(85,113	)	$	44,996

See Note 3, 4 and 5 for information related to the closing of additional tranches of the asset exchange, the CST Fuel Supply Exchange and the acquisition of retail and wholesale assets, respectively, in which we acquired intangible assets.

Amortization expense was $16.1 million, $10.9 million and $15.4 million (including amortization of above and below market lease intangible assets, which is classified as rent expense and $2.0 million of impairment primarily related to FTC-required divestitures) for 2020, 2019 and 2018, respectively. Aggregate amortization expense is expected to be $18.0 million, $17.3 million, $13.3 million, $10.6 million and $8.6 million for 2021, 2022, 2023, 2024 and 2025, respectively.