Securities Available for Sale (Details 3) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	$ 170,520	$ 49,846
Unrealized Losses, Less Than 12 Months	(7,987)	(3,025)
Fair Value, 12 Months or Longer	1,034,046	1,116,642
Unrealized Losses, 12 Months or Longer	(237,726)	(219,539)
Fair Value, Total	1,204,566	1,166,488
Unrealized Losses, Total	(245,713)	(222,564)
U.S. Treasury and U.S. government sponsored entities
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	4,592	399
Unrealized Losses, Less Than 12 Months	(320)	(1)
Fair Value, 12 Months or Longer	110,515	122,361
Unrealized Losses, 12 Months or Longer	(16,865)	(17,596)
Fair Value, Total	115,107	122,760
Unrealized Losses, Total	(17,185)	(17,597)
State and political subdivisions
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	66,436	15,852
Unrealized Losses, Less Than 12 Months	(4,946)	(1,684)
Fair Value, 12 Months or Longer	400,911	428,416
Unrealized Losses, 12 Months or Longer	(101,418)	(91,819)
Fair Value, Total	467,347	444,268
Unrealized Losses, Total	(106,364)	(93,503)
Corporate bonds
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	4,303	8,463
Unrealized Losses, Less Than 12 Months	(146)	(284)
Fair Value, 12 Months or Longer	8,568	3,881
Unrealized Losses, 12 Months or Longer	(427)	(182)
Fair Value, Total	12,871	12,344
Unrealized Losses, Total	(573)	(466)
Mortgage-backed securities - residential
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	30,143	5,113
Unrealized Losses, Less Than 12 Months	(365)	(76)
Fair Value, 12 Months or Longer	460,172	515,259
Unrealized Losses, 12 Months or Longer	(112,152)	(104,068)
Fair Value, Total	490,315	520,372
Unrealized Losses, Total	(112,517)	(104,144)
Collateralized mortgage obligations
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	65,046	20,019
Unrealized Losses, Less Than 12 Months	(2,210)	(980)
Fair Value, 12 Months or Longer	51,405	43,808
Unrealized Losses, 12 Months or Longer	(6,624)	(5,579)
Fair Value, Total	116,451	63,827
Unrealized Losses, Total	(8,834)	(6,559)
Small Business Administration
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	0	0
Unrealized Losses, Less Than 12 Months	0	0
Fair Value, 12 Months or Longer	2,475	2,917
Unrealized Losses, 12 Months or Longer	(240)	(295)
Fair Value, Total	2,475	2,917
Unrealized Losses, Total	$ (240)	$ (295)

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