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Investment Securities - Amortized cost of held to maturity debt securities (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value $ 67,179 $ 63,837
AAA/AA/A    
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value 65,773  
UNRATED    
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value 1,406  
U.S. Agency    
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value 2,500 2,500
U.S. Agency | AAA/AA/A    
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value 2,500  
U.S. Agency mortgage-backed securities    
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value 33,769 26,966
U.S. Agency mortgage-backed securities | AAA/AA/A    
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value 33,769  
Municipal    
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value 28,504 30,959
Municipal | AAA/AA/A    
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value 28,504  
Corporate bonds and other securities    
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value 2,406 $ 3,412
Corporate bonds and other securities | AAA/AA/A    
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value 1,000  
Corporate bonds and other securities | UNRATED    
Schedule of Held-to-Maturity Securities [Line Items]    
Investment securities - HTM, Carrying Value $ 1,406