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Investments (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Jan. 01, 2023
Dec. 31, 2022
Dec. 31, 2022
Dec. 31, 2019
May 31, 2018
Schedule Of Investments [Line Items]                
Corporate Investment $ 15,342 $ 65,024            
Unrealized Gain on Securities 143 1,313            
Unrealized gains (losses) on private investments (1,600) 900            
Investments, All Other Investments [Abstract]                
Realized Investment Gains (Losses) 0 8,371            
Investments 4,400              
Unrealized Gain (Loss) on Investments (1,495) (1,797) $ (711)          
Cost-method Investments, Realized Gains 8,400              
Equity Method Investment, Ownership Percentage       78.70% 47.50% 31.20%    
Unrealized Gain (Loss) on Investments (1,495) (1,797) $ (711)          
Long-term Investments 4,455 4,455            
Unrealized Gain on Securities 143 1,313            
Long Term Investments, Cost, in a private company.               $ 5,400
Long Term Investment, at Cost, in a private investment fund             $ 300  
Unrealized gain on private equity investment 500              
Unrealized gains (losses) on private investments $ (1,600) $ 900