Intangible Assets

6 Months Ended

Jun. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

The gross amount and accumulated amortization of intangible assets with finite useful lives included in “Intangible assets, net” on the consolidated balance sheets are as follows (in thousands except for years):


	June 30, 2023							December 31, 2022							Weighted Average
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Amortization Period (in years)
Backlog	$	142,200	$	(62,852	)	$	79,348	$	142,200	$	(45,903	)	$	96,297		4
Customer relationships		313,720		(165,825	)		147,895		293,730		(146,032	)		147,698		9
Leases		120		(97	)		23		120		(87	)		33		1
Developed technology		23,400		(13,054	)		10,346		16,600		(11,560	)		5,040		6
Trade name		-		-			-		5,000		(3,083	)		1,917		1
Non-compete agreements		3,350		(2,581	)		769		3,350		(2,074	)		1,276		3
In process research and development		1,800		-			1,800		1,800		-			1,800	n/a
Other intangibles		330		(211	)		119		275		(209	)		66		10
Total intangible assets	$	484,920	$	(244,620	)	$	240,300	$	463,075	$	(208,948	)	$	254,127

The aggregate amortization expense of intangible assets for the three months ended June 30, 2023 and June 30, 2022 was $18.1 million and $19.7 million, respectively, and $36.1 million and $39.8 million for the six months ended June 30, 2023 and June 30, 2022, respectively.

Estimated amortization expense for the remainder of the current fiscal year, each of the next four years and beyond is as follows (in thousands):


	June 30, 2023
2023	$	33,448
2024		36,970
2025		31,377
2026		27,797
2027		26,880
Thereafter		82,028
Total	$	238,500