Securities - Securities Sold (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Debt Securities, Available-for-sale [Line Items]
Carrying Value Immediately Prior to Sale	$ 686,485	$ 196,537
Net Proceeds	686,485	177,185
Gain/(Loss)	0	(19,352)
Obligations of other U.S. Government agencies and corporations
Debt Securities, Available-for-sale [Line Items]
Carrying Value Immediately Prior to Sale	34,394
Net Proceeds	34,394
Gain/(Loss)	0
Obligations of states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Carrying Value Immediately Prior to Sale	327,509	12,301
Net Proceeds	327,509	11,360
Gain/(Loss)	0	(941)
Residential mortgage backed securities: | Mortgage backed securities issued by U.S. Government agencies or sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Carrying Value Immediately Prior to Sale	275,910	107,389
Net Proceeds	275,910	95,922
Gain/(Loss)	0	(11,467)
Residential mortgage backed securities: | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Carrying Value Immediately Prior to Sale	2,437	48,300
Net Proceeds	2,437	43,990
Gain/(Loss)	0	(4,310)
Commercial mortgage backed securities: | Mortgage backed securities issued by U.S. Government agencies or sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Carrying Value Immediately Prior to Sale	6,541
Net Proceeds	6,541
Gain/(Loss)	0
Commercial mortgage backed securities: | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Carrying Value Immediately Prior to Sale	6,480	28,547
Net Proceeds	6,480	25,913
Gain/(Loss)	0	$ (2,634)
Other debt securities
Debt Securities, Available-for-sale [Line Items]
Carrying Value Immediately Prior to Sale	33,214
Net Proceeds	33,214
Gain/(Loss)	$ 0