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Loans and Allowance for Credit Losses - Additional information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($) loan	Jun. 30, 2023 USD ($) loan	Jun. 30, 2024 USD ($) loan	Jun. 30, 2023 USD ($) loan	Dec. 31, 2023 USD ($)
Loans and Allowance for Credit Losses
Accrued interest receivable on loans	$ 11.6		$ 11.6		$ 11.8
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Interest Receivable		Interest Receivable		Interest Receivable
Number of loans modified | loan	0	0	0	1
Aggregate outstanding balances of troubled debt restructurings		$ 9.8		$ 9.8
Forgiveness of principal			$ 0.0

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Amount, after allowance for credit loss, of accrued interest on financing receivable.

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