Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)

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Financial Instruments - Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Assets    
Marketable equity securities $ 14,612 $ 18,529
Liabilities    
Contingent consideration 2,690  
Fair Value, Recurring    
Assets    
Marketable equity securities 14,612 18,529
Liabilities    
Contingent consideration 2,690 2,941
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets    
Marketable equity securities 14,612 18,529
Liabilities    
Contingent consideration 0 0
Fair Value, Recurring | Significant Other Observable Inputs (Level 2)    
Assets    
Marketable equity securities 0 0
Liabilities    
Contingent consideration 0 0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3)    
Assets    
Marketable equity securities 0 0
Liabilities    
Contingent consideration $ 2,690 $ 2,941