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Investments In Securities and Fair Value (Schedule Of Unrealized Losses On Investments) (Details) $ in Thousands | Jun. 30, 2022 USD ($) | Dec. 31, 2021 USD ($)
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Debt Securities, Available-for-sale [Line Items] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | 41 | 9
General obligations of U.S. states, territories and political subdivisions |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total temporarily impaired securities, Less than 12 Months, Fair Value | $ 5,582 |
Total temporarily impaired securities, Less than 12 Months, Unrealized Losses | (43) |
Total temporarily impaired securities, 12 Months or Longer, Fair Value | 0 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Total | 5,582 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (43) |
Special revenue issuer obligations of U.S. states, territories and political subdivisions |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total temporarily impaired securities, Less than 12 Months, Fair Value | 14,083 | $ 0
Total temporarily impaired securities, Less than 12 Months, Unrealized Losses | (322) | 0
Total temporarily impaired securities, 12 Months or Longer, Fair Value | 1,101 | 1,102
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (3) | (2)
Debt Securities, Available-for-sale, Unrealized Loss Position, Total | 15,184 | 1,102
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (325) | (2)
Corporate debt securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total temporarily impaired securities, Less than 12 Months, Fair Value | 650 | 8,493
Total temporarily impaired securities, Less than 12 Months, Unrealized Losses | (7) | (13)
Total temporarily impaired securities, 12 Months or Longer, Fair Value | 2,746 | 6,203
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (43) | (35)
Debt Securities, Available-for-sale, Unrealized Loss Position, Total | 3,396 | 14,696
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | (50) | (48)
Total temporarily impaired securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total temporarily impaired securities, Less than 12 Months, Fair Value | 20,315 | 8,493
Total temporarily impaired securities, Less than 12 Months, Unrealized Losses | (372) | (13)
Total temporarily impaired securities, 12 Months or Longer, Fair Value | 3,847 | 7,305
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (46) | (37)
Debt Securities, Available-for-sale, Unrealized Loss Position, Total | 24,162 | 15,798
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (418) | $ (50)

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