INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets consisted of the following (in thousands):


	March 31, 2021						December 31, 2020
	(unaudited)
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	$	175,289	$	(79,584)	$	95,705	$	175,418	$	(76,541)	$	98,877
Non-compete agreements	5,541		(5,541)		—		5,569		(5,569)		—
Trade names	24,797		(21,893)		2,904		24,870		(21,794)		3,076
Technology	7,858		(6,727)		1,131		7,879		(6,691)		1,188
Licenses	855		(731)		124		864		(723)		141
Total	$	214,340	$	(114,476)	$	99,864	$	214,600	$	(111,318)	$	103,282

Amortization expense of intangible assets for the three months ended March 31, 2021 and March 31, 2020 was $3.4 million and $3.6 million, respectively. Amortization expense to be recognized for the remainder of 2021 is approximately $10 million and approximately $13 million per year from 2022 through 2025.