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Goodwill and Intangible Assets, Net (Tables)
 9 Months Ended
Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The following table summarizes the changes in the carrying amount of goodwill, by reportable segment, for the periods presented (in thousands):
EHSClinical SolutionsConsolidated
Balance as of December 31, 2021(1)
$214,334 $211,963 $426,297 
Goodwill acquired(2)
— 296,597 296,597 
Foreign currency translation(104)— (104)
Balance as of September 30, 2022$214,230 $508,560 $722,790 
Balance as of December 31, 2020(1)
$214,354 $134,675 $349,029 
Foreign currency translation(19)— (19)
Balance as of September 30, 2021$214,335 $134,675 $349,010 
————————
(1)Net of cumulative inception to date impairment of $575.5 million as of both December 31, 2021 and 2020.
(2)Goodwill acquired from the addition of IPG in the third quarter of 2022.
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
Technology5 years
Provider network contracts
3 - 5 years
Details of our intangible assets (in thousands, except weighted-average useful lives) as of September 30, 2022 and December 31, 2021 are presented below:

September 30, 2022December 31, 2021
  Weighted- Average Remaining Useful LifeGross Carrying AmountAccumulated AmortizationNet Carrying ValueWeighted- Average Remaining Useful LifeGross Carrying AmountAccumulated AmortizationNet Carrying Value
Corporate trade name13.0$43,600 $9,847 $33,753 12.4$25,800 $7,693 $18,107 
Customer relationships16.0465,019 86,623 378,396 14.9311,019 72,697 238,322 
Technology2.9111,822 78,648 33,174 2.087,922 73,378 14,544 
Below market lease, net0.61,218 1,100 118 1.31,218 950 268 
Provider network contracts (1)
1.516,553 10,596 5,957 2.216,417 7,874 8,543 
Total intangible assets, net$638,212 $186,814 $451,398 $442,376 $162,592 $279,784 
Schedule of Future Estimated Amortization of Intangible Assets
Future estimated amortization of intangible assets (in thousands) as of September 30, 2022, is as follows:

2022$10,620 
202340,487 
202434,603 
202533,057 
202632,880 
Thereafter299,751 
Total future amortization of intangible assets$451,398