Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS - Schedule of Rollforward of Level 3 Assets at Cost Adjusted for any Impairment and Observable Price Changes (Details)

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FAIR VALUE MEASUREMENTS - Schedule of Rollforward of Level 3 Assets at Cost Adjusted for any Impairment and Observable Price Changes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Other Investments    
Beginning balance $ 4,321 $ 345
Purchases 4,048 1,141
Net unrealized gains   2,835
Ending balance $ 8,369 $ 4,321
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]   Realized and unrealized gains, net