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Investments (Schedule Of Unrealized Loss On Investments) (Details) $ in Thousands | Dec. 31, 2022 USD ($) security | Dec. 31, 2021 USD ($) security
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Schedule of Available-for-sale Securities [Line Items] |  |
Less than 12 months: Fair Value | $ 208,157 | $ 236,472
Less than 12 months: Unrealized Losses | $ (16,459) | $ (3,624)
Less than 12 months: Count | security | 309 | 187
12 months or more: Fair Value | $ 266,690 | $ 35,053
12 months or more: Unrealized Losses | $ (45,072) | $ (1,042)
12 months or more: Count | security | 282 | 40
Fair Value | $ 474,847 | $ 271,525
Unrealized Losses | $ (61,531) | $ (4,666)
Count | security | 591 | 227
US Treasury Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Less than 12 months: Fair Value | $ 17,598 | $ 76,383
Less than 12 months: Unrealized Losses | $ (183) | $ (698)
Less than 12 months: Count | security | 3 | 21
12 months or more: Fair Value | $ 72,659 |
12 months or more: Unrealized Losses | $ (11,540) |
12 months or more: Count | security | 28 |
Fair Value | $ 90,257 | $ 76,383
Unrealized Losses | $ (11,723) | $ (698)
Count | security | 31 | 21
Municipal [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Less than 12 months: Fair Value | $ 73,644 | $ 38,997
Less than 12 months: Unrealized Losses | $ (9,586) | $ (910)
Less than 12 months: Count | security | 90 | 44
12 months or more: Fair Value | $ 80,503 | $ 15,404
12 months or more: Unrealized Losses | $ (20,981) | $ (512)
12 months or more: Count | security | 104 | 16
Fair Value | $ 154,147 | $ 54,401
Unrealized Losses | $ (30,566) | $ (1,422)
Count | security | 194 | 60
Corporate [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Less than 12 months: Fair Value | $ 12,221 | $ 8,954
Less than 12 months: Unrealized Losses | $ (851) | $ (132)
Less than 12 months: Count | security | 25 | 17
12 months or more: Fair Value | $ 10,368 | $ 1,694
12 months or more: Unrealized Losses | $ (1,226) | $ (56)
12 months or more: Count | security | 21 | 3
Fair Value | $ 22,589 | $ 10,648
Unrealized Losses | $ (2,077) | $ (188)
Count | security | 46 | 20
Agency mortgage & asset-backed [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Less than 12 months: Fair Value | $ 55,393 | $ 96,923
Less than 12 months: Unrealized Losses | $ (2,747) | $ (1,669)
Less than 12 months: Count | security | 139 | 94
12 months or more: Fair Value | $ 88,953 | $ 15,991
12 months or more: Unrealized Losses | $ (9,611) | $ (417)
12 months or more: Count | security | 113 | 18
Fair Value | $ 144,346 | $ 112,914
Unrealized Losses | $ (12,358) | $ (2,086)
Count | security | 252 | 112
Non-Agency mortgage & asset-backed [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Less than 12 months: Fair Value | $ 49,301 | $ 15,215
Less than 12 months: Unrealized Losses | $ (3,092) | $ (215)
Less than 12 months: Count | security | 52 | 11
12 months or more: Fair Value | $ 14,207 | $ 1,964
12 months or more: Unrealized Losses | $ (1,715) | $ (57)
12 months or more: Count | security | 16 | 3
Fair Value | $ 63,508 | $ 17,179
Unrealized Losses | $ (4,807) | $ (272)
Count | security | 68 | 14

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