Securities - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Additional disclosures
Carrying amount of the securities pledged to collateralize repurchase agreements	$ 7,463,871	$ 8,189,780
Asset Pledged as Collateral [Member]
Additional disclosures
Carrying amount of the securities pledged to collateralize repurchase agreements	$ 410,400	$ 443,200
Financing Receivable, Pledging Purpose [Extensible Enumeration]	Federal Funds Purchased	Federal Funds Purchased
Investment securities market value	$ 3,000,000	$ 2,700,000
Carrying value of public fund deposits	3,200,000	2,900,000
Asset Pledged as Collateral [Member] \| Public Funds Deposits
Additional disclosures
Carrying value of public fund deposits	2,400,000	2,100,000
Asset Pledged as Collateral [Member] \| FHLB Advances
Additional disclosures
Carrying value of public fund deposits	729,400	630,000
Asset Pledged as Collateral [Member] \| Interest rate swap
Additional disclosures
Carrying value of public fund deposits	$ 115,000	$ 149,200

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Indicates pledging purpose of financing receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ References

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Amount of investment in marketable security.

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