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Fair Value Measurements and Investments - Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets fair value $ 15,040 $ 14,950
Deferred compensation plan, Liabilities (1,413) (1,515)
Liabilities fair value, Total (10,513) (1,515)
Lattus [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Liabilities fair value, Total (9,100)  
Convertible Loan Agreements [Member] | Neo Medical [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets fair value 7,670 7,140
Preferred Equity Securities [Member] | Neo Medical [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets fair value 6,084 6,084
Other Investments [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets fair value 1,286 $ 1,726
Fair Value, Inputs, Level 2 [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets fair value 6,084  
Deferred compensation plan, Liabilities (1,413)  
Liabilities fair value, Total (1,413)  
Fair Value, Inputs, Level 2 [Member] | Preferred Equity Securities [Member] | Neo Medical [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets fair value 6,084  
Fair Value, Inputs, Level 3 [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets fair value 8,956  
Liabilities fair value, Total (9,100)  
Fair Value, Inputs, Level 3 [Member] | Lattus [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Liabilities fair value, Total (9,100)  
Fair Value, Inputs, Level 3 [Member] | Convertible Loan Agreements [Member] | Neo Medical [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets fair value 7,670  
Fair Value, Inputs, Level 3 [Member] | Other Investments [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Assets fair value $ 1,286