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Investments (Schedule Of Unrealized Loss On Investments) (Details)
$ in Thousands
Jun. 30, 2023
USD ($)
security
Dec. 31, 2022
USD ($)
security
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months: Fair Value $ 46,441 $ 208,157
Less than 12 months: Unrealized Losses $ (2,463) $ (16,459)
Less than 12 months: Count | security 88 309
12 months or more: Fair Value $ 387,575 $ 266,690
12 months or more: Unrealized Losses $ (54,866) $ (45,072)
12 months or more: Count | security 482 282
Fair Value $ 434,016 $ 474,847
Unrealized Losses $ (57,329) $ (61,531)
Count | security 570 591
U.S Treasury [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months: Fair Value   $ 17,598
Less than 12 months: Unrealized Losses   $ (183)
Less than 12 months: Count | security   3
12 months or more: Fair Value $ 72,692 $ 72,659
12 months or more: Unrealized Losses $ (11,157) $ (11,540)
12 months or more: Count | security 28 28
Fair Value $ 72,692 $ 90,257
Unrealized Losses $ (11,157) $ (11,723)
Count | security 28 31
Municipal [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months: Fair Value $ 842 $ 73,644
Less than 12 months: Unrealized Losses $ (161) $ (9,586)
Less than 12 months: Count | security 2 90
12 months or more: Fair Value $ 135,515 $ 80,503
12 months or more: Unrealized Losses $ (25,461) $ (20,981)
12 months or more: Count | security 166 104
Fair Value $ 136,357 $ 154,147
Unrealized Losses $ (25,622) $ (30,566)
Count | security 168 194
Corporate [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months: Fair Value $ 4,279 $ 12,221
Less than 12 months: Unrealized Losses $ (521) $ (851)
Less than 12 months: Count | security 11 25
12 months or more: Fair Value $ 18,551 $ 10,368
12 months or more: Unrealized Losses $ (2,975) $ (1,226)
12 months or more: Count | security 40 21
Fair Value $ 22,830 $ 22,589
Unrealized Losses $ (3,496) $ (2,077)
Count | security 51 46
Agency Mortgage-Backed & Asset-Backed [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months: Fair Value $ 14,773 $ 55,393
Less than 12 months: Unrealized Losses $ (474) $ (2,747)
Less than 12 months: Count | security 48 139
12 months or more: Fair Value $ 121,344 $ 88,953
12 months or more: Unrealized Losses $ (11,690) $ (9,611)
12 months or more: Count | security 205 113
Fair Value $ 136,117 $ 144,346
Unrealized Losses $ (12,164) $ (12,358)
Count | security 253 252
Non-Agency Mortgage & Asset-Backed [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 months: Fair Value $ 26,547 $ 49,301
Less than 12 months: Unrealized Losses $ (1,307) $ (3,092)
Less than 12 months: Count | security 27 52
12 months or more: Fair Value $ 39,473 $ 14,207
12 months or more: Unrealized Losses $ (3,583) $ (1,715)
12 months or more: Count | security 43 16
Fair Value $ 66,020 $ 63,508
Unrealized Losses $ (4,890) $ (4,807)
Count | security 70 68