Investment Securities - Available-for-sale Securities by Maturities (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Schedule of Available-for-sale Securities
Debt securities, maturing within 1 year, amortized cost		$ 14,827
Debt securities, maturing 1 to 5 years, amortized cost		139,634
Debt securities, maturing 5 to 10 years, amortized cost		194,944
Debt securities, maturing over 10 years, amortized cost		834,883
Amortized cost		1,184,288	$ 1,300,719
Debt securities, maturing within 1 year, fair value		14,754
Debt securities, maturing 1 to 5 years, fair value		130,647
Debt securities, maturing 5 to 10 years, fair value		172,403
Debt securities, maturing over 10 years, fair value		730,518
Debt securities	[1]	$ 1,048,322	1,131,399
Available-for-sale securities, maturing within 1 year, weighted average yield		2.30%
Available-for-sale securities, maturing 1 to 5 years, weighted average yield		2.58%
Available-for-sale securities, maturing 5 to 10 years, weighted average yield		2.42%
Available-for-sale securities, total weighted average yield		2.59%
Available-for-sale securities, total weighted average yield		2.56%
U.S. Treasury and government agencies
Schedule of Available-for-sale Securities
Debt securities, maturing within 1 year, amortized cost		$ 1,283
Debt securities, maturing 1 to 5 years, amortized cost		15,302
Debt securities, maturing 5 to 10 years, amortized cost		8,403
Debt securities, maturing over 10 years, amortized cost		6,011
Amortized cost		30,999	158,473
Debt securities, maturing within 1 year, fair value		1,275
Debt securities, maturing 1 to 5 years, fair value		14,354
Debt securities, maturing 5 to 10 years, fair value		8,493
Debt securities, maturing over 10 years, fair value		6,174
Debt securities		30,296	152,422
U.S. government sponsored agencies
Schedule of Available-for-sale Securities
Debt securities, maturing within 1 year, amortized cost		2,499
Debt securities, maturing 1 to 5 years, amortized cost		59,086
Debt securities, maturing 5 to 10 years, amortized cost		34,849
Debt securities, maturing over 10 years, amortized cost		32,066
Amortized cost		128,500	101,753
Debt securities, maturing within 1 year, fair value		2,486
Debt securities, maturing 1 to 5 years, fair value		54,898
Debt securities, maturing 5 to 10 years, fair value		30,426
Debt securities, maturing over 10 years, fair value		30,797
Debt securities		118,607	88,115
States and political subdivisions
Schedule of Available-for-sale Securities
Debt securities, maturing within 1 year, amortized cost		11,042
Debt securities, maturing 1 to 5 years, amortized cost		46,054
Debt securities, maturing 5 to 10 years, amortized cost		59,932
Debt securities, maturing over 10 years, amortized cost		122,878
Amortized cost		239,906	261,612
Debt securities, maturing within 1 year, fair value		10,990
Debt securities, maturing 1 to 5 years, fair value		43,535
Debt securities, maturing 5 to 10 years, fair value		51,294
Debt securities, maturing over 10 years, fair value		107,477
Debt securities		213,296	225,882
Residential mortgage-backed securities
Schedule of Available-for-sale Securities
Debt securities, maturing within 1 year, amortized cost		3
Debt securities, maturing 1 to 5 years, amortized cost		3,690
Debt securities, maturing 5 to 10 years, amortized cost		61,069
Debt securities, maturing over 10 years, amortized cost		653,010
Amortized cost		717,772	707,025
Debt securities, maturing within 1 year, fair value		3
Debt securities, maturing 1 to 5 years, fair value		3,570
Debt securities, maturing 5 to 10 years, fair value		56,084
Debt securities, maturing over 10 years, fair value		569,267
Debt securities		628,924	604,653
Commercial mortgage-backed securities
Schedule of Available-for-sale Securities
Debt securities, maturing within 1 year, amortized cost		0
Debt securities, maturing 1 to 5 years, amortized cost		12,502
Debt securities, maturing 5 to 10 years, amortized cost		27,191
Debt securities, maturing over 10 years, amortized cost		20,918
Amortized cost		60,611	61,091
Debt securities, maturing within 1 year, fair value		0
Debt securities, maturing 1 to 5 years, fair value		11,370
Debt securities, maturing 5 to 10 years, fair value		23,061
Debt securities, maturing over 10 years, fair value		16,803
Debt securities		51,234	50,049
Bank-issued trust preferred securities
Schedule of Available-for-sale Securities
Debt securities, maturing within 1 year, amortized cost		0
Debt securities, maturing 1 to 5 years, amortized cost		3,000
Debt securities, maturing 5 to 10 years, amortized cost		3,500
Debt securities, maturing over 10 years, amortized cost		0
Amortized cost		6,500	10,765
Debt securities, maturing within 1 year, fair value		0
Debt securities, maturing 1 to 5 years, fair value		2,920
Debt securities, maturing 5 to 10 years, fair value		3,045
Debt securities, maturing over 10 years, fair value		0
Debt securities		$ 5,965	$ 10,278

[1] Available-for-sale investment securities and held-to-maturity investment securities are presented net of allowance for credit losses of $0 and $238, respectively, at December 31, 2023 and $0 and $241, respectively, at December 31, 2022.