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Securities - Amortized Cost and Fair Value Securities Available for Sale and Held to Maturity Contractual Maturities (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Debt securities, available-for-sale, amortized cost, maturing within one year $ 21,647  
Debt securities, available-for-sale, amortized cost, maturing after one year but within five years 148,875  
Debt securities, available-for-sale, amortized cost, maturing after five years but within ten years 45,741  
Debt securities, available-for-sale, amortized cost, maturing after ten years 202,352  
Total securities available-for-sale, amortized cost 418,615  
Debt securities, available-for-sale, U.S. agency residential mortgage-backed, without single maturity date, amortized cost basis 83,116  
Debt securities, available-for-sale, government agency, commercial mortgage backed, without single maturity date, amortized cost basis 13,153  
Debt securities, available-for-sale, private label mortgage backed, without single maturity date, amortized cost basis 80,409  
Debt securities, available-for-sale, other asset backed, without single maturity date, amortized cost basis 44,325  
Total securities available-for-sale, amortized cost 639,618 $ 744,050
Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]    
Debt securities, available-for-sale, fair value, maturing within one year 21,262  
Debt securities, available-for-sale, fair value, maturing after one year but within five years 140,013  
Debt securities, available-for-sale, fair value, maturing after five years but within ten years 41,401  
Debt securities, available-for-sale, fair value, maturing after ten years 177,743  
Total securities available-for-sale, fair value 380,419  
Debt securities, available-for-sale, U.S. agency residential mortgage-backed, without single maturity date, fair value 76,091  
Debt securities, available-for-sale, government agency commercial mortgage backed, without single maturity date, fair value 12,073  
Debt securities, available-for-sale, private label mortgage-backed, without single maturity date, fair value 76,603  
Debt securities, available-for-sale, other asset backed, without single maturity date, fair value 43,764  
Total securities available-for-sale, fair value 588,950 679,350
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity [Abstract]    
Debt securities, held-to-maturity, amortized cost, maturing within one year 7,457  
Debt securities, held-to-maturity, amortized cost, maturing after five years but within ten years 55,599  
Debt securities, held-to-maturity, amortized cost, maturing after five years but within ten years 94,300  
Debt securities, held-to-maturity, amortized cost, maturing after ten years 79,757  
Total securities held-to-maturity, amortized cost 237,113  
Debt securities, held-to-maturity, U.S. agency residential mortgage-backed, without single maturity date, amortized cost 111,666  
Debt securities, held-to-maturity, U.S. agency commercial mortgage-backed, without single maturity date, amortized cost 4,163  
Debt securities, held-to-maturity, private label mortgage-backed, without single maturity date, amortized cost 7,563  
Debt securities, held-to-maturity, other asset backed, without single maturity date, amortized cost 0  
Total securities held-to-maturity, amortized cost 360,505 373,648
Debt Securities, Held-to-Maturity, Fair Value, Maturity [Abstract]    
Debt securities, held-to-maturity, fair value, maturing within one year 7,410  
Debt securities, held-to-maturity, fair value, maturing after one year but within five years 52,401  
Debt securities, held-to-maturity, fair value, maturing after five years but within ten years 82,813  
Debt securities, held-to-maturity, fair value, maturing after ten years 69,526  
Total securities held-to-maturity, fair value 212,150  
Debt securities, held-to-maturity, U.S. agency residential mortgage-backed, without single maturity date, fair value 91,647  
Debt securities, held-to-maturity, U.S. agency commercial mortgage-backed, without single maturity date, fair value 3,835  
Debt securities, held-to-maturity, private label mortgage-backed, without single maturity date, fair value 7,006  
Debt securities, held-to-maturity, other asset backed, without single maturity date, fair value 0  
Total securities held-to-maturity, fair value $ 314,638 $ 318,606