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Fair value measurement - Assets and liabilities measured on a recurring basis (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023
--- | --- | --- | ---
Assets: |  |  |
Restricted cash | $ 3,167 |  | $ 3,173
Recurring Fair Value Measurements |  |  |
Assets: |  |  |
Cash and cash equivalents | 243,062 | $ 241,360 |
Restricted cash | 3,167 | 3,184 |
Total assets | 246,229 | 244,544 |
Liabilities: |  |  |
Contingent consideration | 42,212 | 43,006 |
Consideration for post-acquisition services | 498 | 457 |
Total liabilities | 42,710 | 43,463 |
Recurring Fair Value Measurements | Fair value hierarchy Level 1 |  |  |
Assets: |  |  |
Cash and cash equivalents | 243,062 | 241,360 |
Restricted cash | 3,167 | 3,184 |
Total assets | 246,229 | 244,544 |
Recurring Fair Value Measurements | Fair value hierarchy Level 3 |  |  |
Liabilities: |  |  |
Contingent consideration | 42,212 | 43,006 |
Consideration for post-acquisition services | 498 | 457 |
Total liabilities | $ 42,710 | $ 43,463 |

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 5 -SubTopic 210 -Topic 954 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480632/954-210-45-5 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-8 + Details
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