Investment Securities - Amortized Cost and Fair Values of Debt Securities Held to Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 519,422	$ 405,639
Gross Unrealized Gains	1,091	66
Gross Unrealized Losses	(49,848)	(68,986)
Estimated Fair Value	470,665	336,719
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Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	800	1,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(4)	(16)
Estimated Fair Value	796	984
US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	22,743	24,193
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,250)	(2,246)
Estimated Fair Value	21,493	21,947
Mortgage - Backed Securities - Commercial [Member] | Obligations of U.S. Government [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	163,625	89,404
Gross Unrealized Gains	606	66
Gross Unrealized Losses	(12,320)	(14,785)
Estimated Fair Value	151,911	74,685
Mortgage - Backed Securities - Commercial [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	0	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	0	0
Mortgage - Backed Securities - Residential [Member] | Obligations of U.S. Government [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,379	1,586
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(144)	(220)
Estimated Fair Value	1,235	1,366
Mortgage - Backed Securities - Residential [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	307,676	266,587
Gross Unrealized Gains	485	0
Gross Unrealized Losses	(33,395)	(47,564)
Estimated Fair Value	274,766	219,023
Other Government - Sponsored Enterprises [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	23,199	22,869
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2,735)	(4,155)
Estimated Fair Value	$ 20,464	$ 18,714