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Summary of significant accounting policies (Tables) | 3 Months Ended
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Mar. 31, 2024
Accounting Policies [Abstract] |
Schedule of Finite-Lived Intangible Assets | Intangible assets are amortized on a straight-line basis over their estimated useful lives, as set forth in the table below:
| Estimated Useful Life
Customer relationships | 16 - 23 years
Order backlog | 3 years
Trade names | 3 years
Patient database | 7 years
Technology assets | 5 years
The carrying amount of Intangible Assets for the periods ended March 31, 2024 and December 31, 2023 is as follows:
| March 31, 2024 | December 31, 2023
| (in thousands)
Cost |  |
Customer relationships | $ | 4,089,517 |  | $ | 4,090,393 |
Order backlog | 540,921 |  | 541,302 |
Trade names & brands | 204,629 |  | 204,653 |
Patient database | 170,345 |  | 170,366 |
Technology assets | 151,000 |  | 141,257 |
Total cost | 5,156,412 |  | 5,147,971 |
Accumulated amortization | (1,407,473) |  | (1,292,106) |
Net book value | $ | 3,748,939 |  | $ | 3,855,865 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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