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Fair Value Measurements (Narrative) (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2024
USD ($)
item
Jun. 30, 2023
USD ($)
Jun. 30, 2024
USD ($)
item
Jun. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Long-term investments $ 19,247   $ 19,247   $ 24,540
Short-term investments 30,400   30,400   $ 1,046
Purchase of short-term investments     700,000    
Cost method investment, impairment loss $ 0 $ 0 $ 0 $ 0  
Proceeds from sale of short-term investments       $ 600  
Minimum [Member] | Measurement Input, Discount Rate [Member] | Valuation Technique, Discounted Cash Flow [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Average discount rate | item 0.078   0.078    
Maximum [Member] | Measurement Input, Discount Rate [Member] | Valuation Technique, Discounted Cash Flow [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Average discount rate | item 0.088   0.088    
Revolving Credit Facility [Member] | Minimum [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Basis spread on variable interest rate     1.125%    
Revolving Credit Facility [Member] | Maximum [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Basis spread on variable interest rate     1.50%