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Securities (Details 3) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	$ 126,267	$ 49,846
Unrealized Losses, Less Than 12 Months	(5,426)	(3,025)
Fair Value, 12 Months or Longer	1,059,792	1,116,642
Unrealized Losses, 12 Months or Longer	(239,363)	(219,539)
Fair Value, Total	1,186,059	1,166,488
Unrealized Losses, Total	(244,789)	(222,564)
U.S. Treasury and U.S. government sponsored entities
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	1,381	399
Unrealized Losses, Less Than 12 Months	(13)	(1)
Fair Value, 12 Months or Longer	116,768	122,361
Unrealized Losses, 12 Months or Longer	(18,729)	(17,596)
Fair Value, Total	118,149	122,760
Unrealized Losses, Total	(18,742)	(17,597)
State and political subdivisions
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	58,668	15,852
Unrealized Losses, Less Than 12 Months	(3,598)	(1,684)
Fair Value, 12 Months or Longer	403,117	428,416
Unrealized Losses, 12 Months or Longer	(99,693)	(91,819)
Fair Value, Total	461,785	444,268
Unrealized Losses, Total	(103,291)	(93,503)
Corporate bonds
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	1,894	8,463
Unrealized Losses, Less Than 12 Months	(35)	(284)
Fair Value, 12 Months or Longer	9,172	3,881
Unrealized Losses, 12 Months or Longer	(436)	(182)
Fair Value, Total	11,066	12,344
Unrealized Losses, Total	(471)	(466)
Mortgage-backed securities - residential
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	13,730	5,113
Unrealized Losses, Less Than 12 Months	(277)	(76)
Fair Value, 12 Months or Longer	485,650	515,259
Unrealized Losses, 12 Months or Longer	(114,335)	(104,068)
Fair Value, Total	499,380	520,372
Unrealized Losses, Total	(114,612)	(104,144)
Collateralized mortgage obligations
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	50,594	20,019
Unrealized Losses, Less Than 12 Months	(1,503)	(980)
Fair Value, 12 Months or Longer	42,389	43,808
Unrealized Losses, 12 Months or Longer	(5,900)	(5,579)
Fair Value, Total	92,983	63,827
Unrealized Losses, Total	(7,403)	(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	2,696	2,917
Unrealized Losses, 12 Months or Longer	(270)	(295)
Fair Value, Total	2,696	2,917
Unrealized Losses, Total	$ (270)	$ (295)

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