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FAIR VALUE MEASUREMENTS AND INVESTMENTS - Investments (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($)
Roll forward of investments
Beginning balance	$ 48,444
Income recognized	(1,440)
Contributions / (distributions)	1,231
Foreign currency loss	(1,423)
Gain recognized	4,770
Ending balance	51,582
Investments without a readily determinable fair value
Roll forward of investments
Beginning balance	17,820
Gain recognized	4,770
Ending balance	22,590
Fair value investments
Roll forward of investments
Beginning balance	1,925
Income recognized	205
Contributions / (distributions)	(169)
Ending balance	1,961
Equity investments
Roll forward of investments
Beginning balance	28,699
Income recognized	(1,645)
Contributions / (distributions)	1,400
Foreign currency loss	(1,423)
Ending balance	$ 27,031

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Amount of realized and unrealized gain (loss) on investment.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27405-111563

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7(c),9(a))
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(h))
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