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FAIR VALUE MEASUREMENTS AND INVESTMENTS - Investments (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Roll forward of investments
Beginning balance	$ 42,907	$ 38,169
Income recognized	64	2,501
Contributions / (distributions)	(330)	695
Foreign currency gain		229
Ending balance	42,641	41,594
Investments without a readily determinable fair value
Roll forward of investments
Beginning balance	41,710	22,590
Income recognized		1,786
Contributions / (distributions)		425
Ending balance	41,710	24,801
Fair value investments
Roll forward of investments
Beginning balance	1,197	1,616
Income recognized	64	130
Contributions / (distributions)	(330)	(360)
Ending balance	$ 931	1,386
Equity method investments
Roll forward of investments
Beginning balance		13,963
Income recognized		585
Contributions / (distributions)		630
Foreign currency gain		229
Ending balance		$ 15,407

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Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 80
-Name Accounting Standards Codification
-Section 55
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480078/944-80-55-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 80
-Name Accounting Standards Codification
-Section 55
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480078/944-80-55-9

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(h))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

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