Securities - Schedule of Available-for-sale Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Available-for-sale securities
Fair Value, Less than 12 Months	$ 66,423	$ 31,829
Unrealized Losses, Less than 12 Months	281	286
Fair Value, 12 Months or Longer	958,132	1,011,691
Unrealized Losses, 12 Months or Longer	150,336	140,922
Fair Value	1,024,555	1,043,520
Unrealized Losses	150,617	141,208
U.S. Treasuries
Available-for-sale securities
Fair Value, Less than 12 Months	19,876	0
Unrealized Losses, Less than 12 Months	2	0
Fair Value, 12 Months or Longer	65,756	65,663
Unrealized Losses, 12 Months or Longer	4,980	5,009
Fair Value	85,632	65,663
Unrealized Losses	4,982	5,009
Obligations of U.S. Government sponsored entities
Available-for-sale securities
Fair Value, Less than 12 Months	29,993	14,453
Unrealized Losses, Less than 12 Months	14	110
Fair Value, 12 Months or Longer	214,490	220,913
Unrealized Losses, 12 Months or Longer	23,198	22,167
Fair Value	244,483	235,366
Unrealized Losses	23,212	22,277
Obligations of U.S. states and political subdivisions
Available-for-sale securities
Fair Value, Less than 12 Months	2,236	10,572
Unrealized Losses, Less than 12 Months	8	106
Fair Value, 12 Months or Longer	76,125	69,601
Unrealized Losses, 12 Months or Longer	10,080	7,971
Fair Value	78,361	80,173
Unrealized Losses	10,088	8,077
U.S. Government agencies
Available-for-sale securities
Fair Value, Less than 12 Months	0	1,145
Unrealized Losses, Less than 12 Months	0	4
Fair Value, 12 Months or Longer	39,801	43,764
Unrealized Losses, 12 Months or Longer	5,311	4,740
Fair Value	39,801	44,909
Unrealized Losses	5,311	4,744
U.S. Government sponsored entities
Available-for-sale securities
Fair Value, Less than 12 Months	14,318	5,659
Unrealized Losses, Less than 12 Months	257	66
Fair Value, 12 Months or Longer	559,593	609,456
Unrealized Losses, 12 Months or Longer	106,634	100,829
Fair Value	573,911	615,115
Unrealized Losses	106,891	100,895
U.S. corporate debt securities
Available-for-sale securities
Fair Value, Less than 12 Months	0	0
Unrealized Losses, Less than 12 Months	0	0
Fair Value, 12 Months or Longer	2,367	2,294
Unrealized Losses, 12 Months or Longer	133	206
Fair Value	2,367	2,294
Unrealized Losses	$ 133	$ 206

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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