Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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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.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Fair value of financial and nonfinancial obligations.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Fair value measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Assets
Investments in marketable securities, non-current	$ 11,057	$ 37,363
Liabilities
Contingent consideration	7,168	7,531	$ 5,707	$ 5,298
Recurring
Assets
Cash and cash equivalents	27,197	30,776
Investments in marketable securities, current	125,287	116,137
Investments in marketable securities, non-current	11,057	37,363
Total	163,541	184,276
Liabilities
Contingent consideration	7,168	7,531
Total	7,168	7,531
Recurring \| Level 1
Assets
Cash and cash equivalents	27,197	30,776
Investments in marketable securities, current	0	0
Investments in marketable securities, non-current	0	0
Total	27,197	30,776
Liabilities
Contingent consideration	0	0
Total	0	0
Recurring \| Level 2
Assets
Cash and cash equivalents	0	0
Investments in marketable securities, current	125,287	116,137
Investments in marketable securities, non-current	11,057	37,363
Total	136,344	153,500
Liabilities
Contingent consideration	0	0
Total	0	0
Recurring \| Level 3
Assets
Cash and cash equivalents	0	0
Investments in marketable securities, current	0	0
Investments in marketable securities, non-current	0	0
Total	0	0
Liabilities
Contingent consideration	7,168	7,531
Total	$ 7,168	$ 7,531