Goodwill and Intangible Assets, Net (Tables)

6 Months Ended

Jun. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

The following table summarizes the changes in the carrying amount of goodwill, by reportable segment, for the six months ended June 30, 2021 and 2020 (in thousands):


	EHS		Clinical Solutions		Consolidated
Balance as of December 31, 2020 (1)	$	214,354	$	134,675	$	349,029
Foreign currency translation	(20)		—		(20)
Balance as of June 30, 2021	$	214,334	$	134,675	$	349,009


	EHS		Clinical Solutions		Consolidated
Balance as of December 31, 2019 (1)	$	431,684	$	134,675	$	566,359
Goodwill disposal (2)	(2,200)		—		(2,200)
Impairment	(215,100)		—		(215,100)
Foreign currency translation	(69)		—		(69)
Balance as of June 30, 2020	$	214,315	$	134,675	$	348,990

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(1)Net of cumulative inception to date impairment of $575.5 million and $360.4 million as of December 31, 2020 and 2019, respectively.

(2)Goodwill written-off upon disposal of a consolidated subsidiary.

Schedule of intangible assets details

The following summarizes the estimated useful lives by asset classification:


Corporate trade name			10 - 20 years
Customer relationships			10 - 25 years
Technology			5 years
Provider network contracts			4 - 5 years

Details of our intangible assets (in thousands, except weighted-average useful lives) as of June 30, 2021 and December 31, 2020 are presented below:


	June 30, 2021							December 31, 2020
	Weighted- Average Remaining Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Value		Weighted- Average Remaining Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Value
Corporate trade name	12.7	$	23,300	$	6,961	$	16,339	13.2	$	23,300	$	6,271	$	17,029
Customer relationships (1)	15.7	278,519		64,894		213,625		16.2	278,519		57,716		220,803
Technology	1.3	82,922		68,809		14,113		1.8	82,922		63,507		19,415
Below market lease, net	1.8	1,218		849		369		2.3	1,118		648		470
Provider network contracts (1)	2.5	13,947		6,348		7,599		2.9	12,175		4,900		7,275
Total intangible assets, net		$	399,906	$	147,861	$	252,045		$	398,034	$	133,042	$	264,992

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(1)Amounts exclude $2.2 million and $0.9 million of customer relationships and provider network contracts, respectively, net of accumulated amortization, with weighted average remaining useful lives of 15 years and 10 months reclassified to discontinued operations as of December 31, 2020.

Schedule of future estimated amortization of intangible assets

Future estimated amortization of intangible assets (in thousands) as of June 30, 2021, is as follows:


2021	$	13,762
2022	24,629
2023	22,325
2024	16,441
2025	15,736
Thereafter	159,152
Total future amortization of intangible assets	$	252,045