Securities - Amortized Cost and Fair Value of Securities Available for Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Amortized cost and fair value of securities available for sale
Amortized Cost	$ 894,599	$ 1,062,649
Gross Unrealized Gains	739	424
Gross Unrealized Losses	(145,653)	(139,794)
Fair Value	749,685	923,279
Obligations of states and political subdivisions
Amortized cost and fair value of securities available for sale
Amortized Cost	20,355	36,374
Gross Unrealized Gains	68	119
Gross Unrealized Losses	(2,273)	(1,883)
Fair Value	18,150	34,610
Other debt securities
Amortized cost and fair value of securities available for sale
Amortized Cost	113,741	72,383
Gross Unrealized Gains	565	109
Gross Unrealized Losses	(3,791)	(4,458)
Fair Value	110,515	68,034
Government agency mortgage backed securities \| Residential mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost	193,895	301,400
Gross Unrealized Gains	102	172
Gross Unrealized Losses	(26,380)	(24,968)
Fair Value	167,617	276,604
Government agency mortgage backed securities \| Commercial mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost	6,016	6,029
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(681)	(637)
Fair Value	5,335	5,392
Government agency collateralized mortgage obligations \| Residential mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost	420,707	485,164
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(89,746)	(85,883)
Fair Value	330,961	399,281
Government agency collateralized mortgage obligations \| Commercial mortgage backed securities:
Amortized cost and fair value of securities available for sale
Amortized Cost	139,885	161,299
Gross Unrealized Gains	4	24
Gross Unrealized Losses	(22,782)	(21,965)
Fair Value	$ 117,107	$ 139,358

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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