Investment Securities (Credit Quality Information) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	$ 503,938	$ 513,282
Aaa
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	488,297	498,631
Aa1
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	1,469	1,470
A3
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	4,000	4,000
Baa1
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	4,000	4,000
Baa2
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	500	500
NR
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	5,672	4,681
U.S. Treasury and government agencies
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	143,215	143,442
U.S. Treasury and government agencies | Aaa
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	139,543	140,761
U.S. Treasury and government agencies | Aa1
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
U.S. Treasury and government agencies | A3
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
U.S. Treasury and government agencies | Baa1
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
U.S. Treasury and government agencies | Baa2
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
U.S. Treasury and government agencies | NR
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	3,672	2,681
Mortgage-backed-residential
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	348,754	357,870
Mortgage-backed-residential | Aaa
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	348,754	357,870
Mortgage-backed-residential | Aa1
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
Mortgage-backed-residential | A3
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
Mortgage-backed-residential | Baa1
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
Mortgage-backed-residential | Baa2
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
Mortgage-backed-residential | NR
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
States and political subdivisions
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	1,469	1,470
States and political subdivisions | Aaa
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
States and political subdivisions | Aa1
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	1,469	1,470
States and political subdivisions | A3
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
States and political subdivisions | Baa1
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
States and political subdivisions | Baa2
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
States and political subdivisions | NR
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
Other debt securities
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	10,500	10,500
Other debt securities | Aaa
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
Other debt securities | Aa1
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	0	0
Other debt securities | A3
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	4,000	4,000
Other debt securities | Baa1
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	4,000	4,000
Other debt securities | Baa2
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	500	500
Other debt securities | NR
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Line Items]
Amortized Cost	$ 2,000	$ 2,000