Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

There were no changes in goodwill for the three months ended March 31, 2021. The goodwill balance consisted of the following (in thousands):


	Fleet		Federal and Defense		Aviation		Total
Balance as of December 31, 2020	$	63,190	$	30,883	$	144,053	$	238,126



Balance as of March 31, 2021	$	63,190	$	30,883	$	144,053	$	238,126

We perform an annual review of goodwill for impairment during the fourth quarter and whenever events or other changes in circumstances indicate that the carrying value may not be fully recoverable.

Intangible assets, net comprised the following (in thousands):


	Cost		Accumulated Amortization		Accumulated Impairment Loss		Net Intangible Assets
March 31, 2021
Contract and customer-related	$	219,801	$	(114,635)	$	(3,814)	$	101,352
Acquired technologies	12,400		(11,069)		—		1,331
Trade names	18,770		(15,539)		—		3,231
Total	$	250,971	$	(141,243)	$	(3,814)	$	105,914

December 31, 2020
Contract and customer-related	$	213,194	$	(110,917)	$	(3,814)	$	98,463
Acquired technologies	12,400		(10,787)		—		1,613
Trade names	18,770		(15,251)		—		3,519
Total	$	244,364	$	(136,955)	$	(3,814)	$	103,595

The increase in the gross carrying amount of contract and customer-related intangibles during the first quarter of 2021 is related to customer relationship intangible recognized in connection with the acquisition of HSS during the quarter. See Note (2)

"Acquisition and Divestitures" for additional details regarding the acquisition.

Amortization expense related to intangible assets was approximately $4.3 million and $4.7 million for the three months ended March 31, 2021 and 2020, respectively.