A summary of intangible assets as of December 31, 2024 and 2023 is as follows (in thousands):


	December 31, 2024
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	$	162,633	$	(113,033)	$	49,600
Trade names	19,129		(18,754)		375
Technology	2,300		(2,032)		268
Licenses	683		(683)		—
Intangible assets	$	184,745	$	(134,502)	$	50,243


	December 31, 2023
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	$	164,305	$	(102,630)	$	61,675
Trade names	20,262		(19,742)		520
Technology	2,300		(1,802)		498
Licenses	683		(683)		—
Intangible assets	$	187,550	$	(124,857)	$	62,693

Amortization expense on intangible assets for the years ended December 31, 2024 and 2023 was $12.4 million and $12.7 million, respectively, and is included in “Selling, general and administrative expenses” on our Consolidated Statements of

Operations. Amortization expense for intangible assets is forecasted to be approximately $12.4 million, $12.0 million, $11.3 million, $6.4 million, and $5.4 million in 2025, 2026, 2027, 2028 and 2029, respectively.

The weighted-average amortization period for intangible assets subject to amortization was 13.8 years as of December 31, 2024 and 2023. The weighted-average amortization period as of December 31, 2024 is 13.9 years for customer relationships, 13.8 years for trade name and 10.0 years for technology.