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Goodwill and Intangible Assets, Net (Tables)
12 Months Ended
Dec. 31, 2021
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, 2019 (1)
$431,684 $134,675 $566,359 
Goodwill disposal (2)
(2,200)— (2,200)
Impairment(215,100)— (215,100)
Foreign currency translation(30)— (30)
Balance as of December 31, 2020(1)
214,354 134,675 349,029 
Goodwill acquired— 77,288 77,288 
Foreign currency translation(20)— (20)
Balance as of December 31, 2021$214,334 $211,963 $426,297 
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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
Technology5 years
Provider network contracts
3 - 5 years
Details of our intangible assets (in thousands, except weighted-average useful lives) as of December 31, 2021 and December 31, 2020 are presented below:

December 31, 2021December 31, 2020
  Weighted- Average Remaining Useful LifeGross Carrying AmountAccumulated AmortizationNet Carrying ValueWeighted- Average Remaining Useful LifeGross Carrying AmountAccumulated AmortizationNet Carrying Value
Corporate trade name12.4$25,800 $7,693 $18,107 13.2$23,300 $6,271 $17,029 
Customer relationships (1)
14.9311,019 72,697 238,322 16.2278,519 57,716 220,803 
Technology2.087,922 73,378 14,544 1.882,922 63,507 19,415 
Below market lease, net1.31,218 950 268 2.31,118 648 470 
Provider network contracts (1)
2.216,417 7,874 8,543 2.912,175 4,900 7,275 
Total intangible assets, net$442,376 $162,592 $279,784 $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 December 31, 2021, is as follows:
2022$29,102 
202326,798 
202420,913 
202519,403 
202619,153 
Thereafter164,415 
Total future amortization of intangible assets$279,784