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Investments In Securities and Fair Value (Schedule of Cost-method Investments) (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Fair​Value​Assets​Measured​On​Nonrecurring​Basis​Reconciliation​Calculation​Roll​Forward [Line Items]    
Equity investments in unconsolidated affiliates, measurement alternative $ 7,892 $ 8,166
Notes receivable, fair value disclosure 892 641
Other assets, fair value disclosure 8,784 8,807
Level 1    
Fair​Value​Assets​Measured​On​Nonrecurring​Basis​Reconciliation​Calculation​Roll​Forward [Line Items]    
Equity investments in unconsolidated affiliates, measurement alternative 0 0
Notes receivable, fair value disclosure 0 0
Other assets, fair value disclosure 0 0
Level 2    
Fair​Value​Assets​Measured​On​Nonrecurring​Basis​Reconciliation​Calculation​Roll​Forward [Line Items]    
Equity investments in unconsolidated affiliates, measurement alternative 0 0
Notes receivable, fair value disclosure 0 0
Other assets, fair value disclosure 0 0
Level 3    
Fair​Value​Assets​Measured​On​Nonrecurring​Basis​Reconciliation​Calculation​Roll​Forward [Line Items]    
Equity investments in unconsolidated affiliates, measurement alternative 7,892 8,166
Notes receivable, fair value disclosure 892 641
Other assets, fair value disclosure $ 8,784 $ 8,807