Investment Securities (Details) - USD ($) $ in Thousands	Apr. 01, 2021	Dec. 31, 2022	Dec. 31, 2021
Investment securities available-for-sale
Amortized Cost		$ 849,567	$ 860,258
Unrealized Gains		21	5,362
Unrealized Losses		(132,264)	(11,971)
Fair Value		717,324	853,649
Amortized Cost		321,902	352,061
Unrealized Gains			1,110
Unrealized Losses		(50,990)	(3,494)
Fair Value		270,912	349,677
Amortized Cost		1,171,469	1,212,319
Unrealized Gains		21	6,472
Unrealized Losses		(183,254)	(15,465)
Fair Value		988,236	1,203,326
U.S. treasury and government agencies
Investment securities available-for-sale
Amortized Cost		3,518	5,028
Unrealized Gains		19	75
Unrealized Losses		(17)
Fair Value		3,520	5,103
Mortgage backed securities - Residential agency
Investment securities available-for-sale
Amortized Cost		705,845	717,781
Unrealized Gains		2	1,213
Unrealized Losses		(118,168)	(11,837)
Fair Value		587,679	707,157
Amortized Cost		184,115	207,518
Unrealized Losses		(33,254)	(3,145)
Fair Value		150,861	204,373
Mortgage backed securities - Commercial
Investment securities available-for-sale
Amortized Cost		70,669	88,362
Unrealized Gains			2,674
Unrealized Losses		(7,111)	(123)
Fair Value		63,558	90,913
Asset backed securities
Investment securities available-for-sale
Amortized Cost		34	52
Unrealized Gains			2
Fair Value		34	54
Corporate bonds
Investment securities available-for-sale
Amortized Cost		69,501	49,035
Unrealized Gains			1,398
Unrealized Losses		(6,968)	(11)
Fair Value		62,533	50,422
Obligations of state and political agencies.
Investment securities available-for-sale
Amortized Cost			144,543
Unrealized Gains			1,110
Unrealized Losses			(349)
Fair Value			$ 145,304
Amortized Cost		137,787
Unrealized Losses		(17,736)
Fair Value		$ 120,051
Fair value of debt securities available-for-sale transferred to held-to-maturity	$ 149,200
Net unrealized gain from available-for-sale to held-to-maturity	$ 1,300

Amortized cost of investments in available for sale and held maturity securities.

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