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Fair Value and Equity Investments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Fair Value on a Recurring Basis [Member] - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financial assets:    
Cash equivalents and current investments $ 20,752 $ 39,084
Life insurance contracts 52,149 48,410
Financial assets (liabilities) 72,901 87,494
Level 1 [Member]    
Financial assets:    
Cash equivalents and current investments 20,752 39,084
Life insurance contracts 0 0
Financial assets (liabilities) 20,752 39,084
Level 2 [Member]    
Financial assets:    
Cash equivalents and current investments 0 0
Life insurance contracts 0 0
Financial assets (liabilities) 0 0
Level 3 [Member]    
Financial assets:    
Cash equivalents and current investments 0 0
Life insurance contracts 52,149 48,410
Financial assets (liabilities) $ 52,149 $ 48,410