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Securities & Allowance for Securities Credit Losses - Unrealized Loss Position (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items]    
Unrealized loss position for less than 12 months, unrealized loss $ (99) $ (196)
Unrealized loss position for less than 12 months, fair value 100,153 156,681
Unrealized loss position for more than 12 months, unrealized loss (3,744) (6,885)
Unrealized loss position for more than 12 months, fair value 98,161 140,153
Available-for Sale, Gross Unrealized Losses, Total (3,843) (7,081)
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total 198,314 296,834
U.S. government and federal agencies    
Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items]    
Unrealized loss position for less than 12 months, unrealized loss (71) (29)
Unrealized loss position for less than 12 months, fair value 92,081 141,169
Unrealized loss position for more than 12 months, unrealized loss (941) (1,532)
Unrealized loss position for more than 12 months, fair value 15,476 22,348
Available-for Sale, Gross Unrealized Losses, Total (1,012) (1,561)
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total 107,557 163,517
Mortgage backed securities    
Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items]    
Unrealized loss position for less than 12 months, unrealized loss 0 0
Unrealized loss position for less than 12 months, fair value 0 26
Unrealized loss position for more than 12 months, unrealized loss (381) (582)
Unrealized loss position for more than 12 months, fair value 5,934 7,338
Available-for Sale, Gross Unrealized Losses, Total (381) (582)
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total 5,934 7,364
Corporate bonds    
Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items]    
Unrealized loss position for less than 12 months, unrealized loss (15) (90)
Unrealized loss position for less than 12 months, fair value 4,008 6,365
Unrealized loss position for more than 12 months, unrealized loss (213) (663)
Unrealized loss position for more than 12 months, fair value 12,582 30,677
Available-for Sale, Gross Unrealized Losses, Total (228) (753)
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total 16,590 37,042
State and municipal securities    
Schedule of Available-for-sale and Held-to-Maturity Securities [Line Items]    
Unrealized loss position for less than 12 months, unrealized loss (13) (77)
Unrealized loss position for less than 12 months, fair value 4,064 9,121
Unrealized loss position for more than 12 months, unrealized loss (2,209) (4,108)
Unrealized loss position for more than 12 months, fair value 64,169 79,790
Available-for Sale, Gross Unrealized Losses, Total (2,222) (4,185)
Available-for Sale, Fair Value of Investments with Unrealized Losses, Total $ 68,233 $ 88,911