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INVESTMENTS (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Schedule of Investments [Line Items]      
Long-term Investments $ 4,455   $ 4,455
Estimated Fair Value 18,638   18,369
Cost 16,088   16,121
Net change in unrealized appreciation (depreciation) on private investments 0 $ 37  
us-gaap_EquitySecuritiesMember [Member]      
Schedule of Investments [Line Items]      
Cost $ 162   $ 159