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Fair Value of Financial Instruments - Schedule of Fair Value of Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Assets:    
Investments in equity securities $ 189 $ 330
Total assets 189 330
Level 1    
Assets:    
Investments in equity securities 178 319
Total assets 178 319
Level 2    
Assets:    
Investments in equity securities 0 0
Total assets 0 0
Level 3    
Assets:    
Investments in equity securities 11 11
Total assets $ 11 $ 11