Investment Securities (Details) - USD ($)	Apr. 01, 2021	Dec. 31, 2023	Dec. 31, 2022
Investment securities available-for-sale
Amortized Cost		$ 584,754,000	$ 849,567,000
Unrealized Gains		5,000	21,000
Unrealized Losses		(98,023,000)	(132,264,000)
Allowance for Credit Losses		0	0
Fair Value		486,736,000	717,324,000
Amortized Cost		299,728,000	321,902,000
Unrealized Losses		(41,111,000)	(50,990,000)
Allowance for Credit Losses		213,000	0
Fair Value		258,617,000	270,912,000
Amortized Cost		884,482,000	1,171,469,000
Unrealized Gains		5,000	21,000
Unrealized Losses		(139,134,000)	(183,254,000)
Allowance for Credit Losses		213,000
Fair Value		745,353,000	988,236,000
Available-for-Sale accrued interest receivable		$ 1,500,000	$ 1,900,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]		Fair Value	Fair Value
Held-to-Maturity accrued interest receivable		$ 1,400,000	$ 1,500,000
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]		Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss	Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss
Net unrealized gains on the transferred securities		$ 108,000	$ 272,000
Deferred tax on the transferred securities		55,000	137,000
U.S. treasury and government agencies
Investment securities available-for-sale
Amortized Cost		1,119,000	3,518,000
Unrealized Gains		4,000	19,000
Unrealized Losses		(3,000)	(17,000)
Fair Value		1,120,000	3,520,000
Mortgage backed securities - Residential agency
Investment securities available-for-sale
Amortized Cost		524,140,000	705,845,000
Unrealized Gains		1,000	2,000
Unrealized Losses		(88,547,000)	(118,168,000)
Fair Value		435,594,000	587,679,000
Amortized Cost		170,125,000	184,115,000
Unrealized Losses		(28,498,000)	(33,254,000)
Allowance for Credit Losses		99,000
Fair Value		141,627,000	150,861,000
Mortgage backed securities - Commercial
Investment securities available-for-sale
Amortized Cost		1,476,000	70,669,000
Unrealized Losses		(123,000)	(7,111,000)
Fair Value		1,353,000	63,558,000
Asset backed securities
Investment securities available-for-sale
Amortized Cost		26,000	34,000
Unrealized Losses		(1,000)
Fair Value		25,000	34,000
Corporate bonds
Investment securities available-for-sale
Amortized Cost		57,993,000	69,501,000
Unrealized Losses		(9,349,000)	(6,968,000)
Fair Value		48,644,000	62,533,000
Obligations of state and political agencies.
Investment securities available-for-sale
Amortized Cost		129,603,000	137,787,000
Unrealized Losses		(12,613,000)	(17,736,000)
Allowance for Credit Losses		114,000
Fair Value		$ 116,990,000	$ 120,051,000
Fair value of debt securities available-for-sale transferred to held-to-maturity	$ 149,200,000
Net unrealized gain from available-for-sale to held-to-maturity	$ 1,300,000