Investments In Securities and Fair Value (Schedule Of Gross Realized and Unrealized Gains And Losses On Securities) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Marketable Security, Gain (Loss) [Abstract]
Corporate debt securities, realized gains	$ 34	$ 3
Equity securities, realized gains	189	2,557
Debit and equity securities, realized gains	223	2,560
Equity securities, realized losses	(106)	(287)
Debt and equity securities, realized loss	(106)	(287)
Debt and equity securities, net realized gain (loss)	117	2,273
Gross gains on other investments	0	1
Write-down of other assets	0	(275)
Net gains (losses) on other investments	0	(274)
Net realized investment gains (losses)	117	1,999
Unrealized gain (loss) on investments	407	(3,178)
Net investment gains (losses)	$ 524	$ (1,179)

Amount of realized gain on investments in debt and equity securities

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Amount of realized loss on investments in debt and equity securities

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Gains on other assets and investments

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Amount of realized gain (loss) on investment in debt and equity securities.

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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Amount of realized gain from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of realized loss from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of realized and unrealized gain (loss) on investment.

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Amount of gain (loss) included in earnings for investments classified as other.

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The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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Amount of realized gain (loss) on investment.

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Amount of unrealized gain (loss) on investment.

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