Securities - AFS and HTM, Amortized Cost and FV (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2025	Dec. 31, 2024
Available for sale
Amortized Cost	$ 1,492,604	$ 1,498,415
Unrealized Gains	1,535	963
Unrealized Losses	(88,969)	(102,829)
Available for sale securities	1,405,170	1,396,549
Held to maturity
Amortized Cost	762,369	737,899
Unrealized Gains	303	32
Unrealized Losses	(75,203)	(88,059)
Held to maturity, Fair Value	687,469	649,872
Equity Securities
Net gains due to changes in the fair value of equity securities	200	200
Equity, at fair value	286	297
U.S. Treasury securities
Available for sale
Amortized Cost	4,993	4,991
Unrealized Losses	(178)	(229)
Available for sale securities	4,815	4,762
Bonds
Available for sale
Amortized Cost	103,867	112,293
Unrealized Gains	220	214
Unrealized Losses	(574)	(639)
Available for sale securities	103,513	111,868
Residential mortgage-backed securities
Available for sale
Amortized Cost	391,408	379,651
Unrealized Gains	374	35
Unrealized Losses	(31,533)	(38,500)
Available for sale securities	360,249	341,186
Held to maturity
Amortized Cost	250,486	255,880
Unrealized Losses	(25,092)	(31,621)
Held to maturity, Fair Value	225,394	224,259
Commercial mortgage-backed securities
Available for sale
Amortized Cost	223,141	226,326
Unrealized Gains	345	161
Unrealized Losses	(6,088)	(6,160)
Available for sale securities	217,398	220,327
Held to maturity
Amortized Cost	156,646	147,696
Unrealized Gains	201
Unrealized Losses	(8,651)	(10,688)
Held to maturity, Fair Value	148,196	137,008
Collateralized mortgage obligations
Available for sale
Amortized Cost	704,906	710,663
Unrealized Gains	374	328
Unrealized Losses	(46,641)	(53,391)
Available for sale securities	658,639	657,600
Held to maturity
Amortized Cost	278,144	257,230
Unrealized Gains	82
Unrealized Losses	(33,396)	(38,269)
Held to maturity, Fair Value	244,830	218,961
Corporate debt securities
Available for sale
Amortized Cost	30,877	30,139
Unrealized Gains	215	215
Unrealized Losses	(538)	(538)
Available for sale securities	30,554	29,816
States and political subdivisions
Available for sale
Amortized Cost	33,412	34,352
Unrealized Gains	7	10
Unrealized Losses	(3,417)	(3,372)
Available for sale securities	30,002	30,990
Held to maturity
Amortized Cost	77,093	77,093
Unrealized Gains	20	32
Unrealized Losses	(8,064)	(7,481)
Held to maturity, Fair Value	$ 69,049	$ 69,644

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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