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Investments (Schedule Of Unrealized Loss On Investments) (Details)
$ in Thousands
Sep. 30, 2024
USD ($)
security
Dec. 31, 2023
USD ($)
security
Sep. 30, 2023
USD ($)
Schedule of Available-for-sale Securities [Line Items]      
Less than 12 months: Fair Value $ 12,070 $ 55,638  
Less than 12 months: Unrealized Losses $ (43) $ (913)  
Less than 12 months: Count | security 9 43  
12 months or more: Fair Value $ 418,837 $ 402,548  
12 months or more: Unrealized Losses $ (37,309) $ (48,641)  
12 months or more: Count | security 525 521  
Fair Value $ 430,907 $ 458,186  
Unrealized Losses $ (37,352) $ (49,554) $ (12,200)
Count | security 534 564  
U.S Treasury [Member]      
Schedule of Available-for-sale Securities [Line Items]      
12 months or more: Fair Value $ 75,688 $ 74,091  
12 months or more: Unrealized Losses $ (7,271) $ (9,403)  
12 months or more: Count | security 28 28  
Fair Value $ 75,688 $ 74,091  
Unrealized Losses $ (7,271) $ (9,403)  
Count | security 28 28  
Municipal [Member]      
Schedule of Available-for-sale Securities [Line Items]      
12 months or more: Fair Value $ 139,722 $ 138,618  
12 months or more: Unrealized Losses $ (18,411) $ (22,721)  
12 months or more: Count | security 166 168  
Fair Value $ 139,722 $ 138,618  
Unrealized Losses $ (18,411) $ (22,721)  
Count | security 166 168  
Corporate [Member]      
Schedule of Available-for-sale Securities [Line Items]      
Less than 12 months: Fair Value   $ 1,483  
Less than 12 months: Unrealized Losses   $ (167)  
Less than 12 months: Count | security   5  
12 months or more: Fair Value $ 23,335 $ 21,715  
12 months or more: Unrealized Losses $ (2,031) $ (2,971)  
12 months or more: Count | security 50 46  
Fair Value $ 23,335 $ 23,198  
Unrealized Losses $ (2,031) $ (3,138)  
Count | security 50 51  
Agency Mortgage & Asset-Backed [Member]      
Schedule of Available-for-sale Securities [Line Items]      
Less than 12 months: Fair Value $ 1,562 $ 6,227  
Less than 12 months: Unrealized Losses $ (2) $ (186)  
Less than 12 months: Count | security 4 19  
12 months or more: Fair Value $ 107,560 $ 118,053  
12 months or more: Unrealized Losses $ (7,310) $ (9,878)  
12 months or more: Count | security 223 223  
Fair Value $ 109,122 $ 124,280  
Unrealized Losses $ (7,312) $ (10,064)  
Count | security 227 242  
Non-Agency Mortgage & Asset-Backed [Member]      
Schedule of Available-for-sale Securities [Line Items]      
Less than 12 months: Fair Value $ 10,508 $ 47,928  
Less than 12 months: Unrealized Losses $ (41) $ (560)  
Less than 12 months: Count | security 5 19  
12 months or more: Fair Value $ 72,532 $ 50,071  
12 months or more: Unrealized Losses $ (2,286) $ (3,668)  
12 months or more: Count | security 58 56  
Fair Value $ 83,040 $ 97,999  
Unrealized Losses $ (2,327) $ (4,228)  
Count | security 63 75