Loans and Allowance for Credit Losses - Loan Modifications (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2024	Dec. 31, 2023
Loan modifications
Percent of Total Carrying Value of Loans, net	0.70%	4.40%
Period of payment deferral	7 months	12 months
Period added to the weighted average life of the loan	8 months	18 months
Carrying amount of loan foreclosure in process	$ 23.6	$ 95.0
Lending commitments to borrowers experiencing financial difficulty for which loan terms have been modified	12.9
Commercial real estate loans
Loan modifications
Carrying Value	67.2	467.9
SBA 7(a)
Loan modifications
Carrying Value	$ 0.1	$ 1.3

Extended period added to the weighted average life of the loan in which it must be paid.

No definition available.

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- Definition

Period of time provided for temporary postponement of loan payments.

+ References

No definition available.

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified for borrowers experiencing financial difficulty.

+ References

No definition available.

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- Definition

Represents loan modifications as a percentage of total carrying value of the net loans.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of commitment to lend additional funds to debtor experiencing financial difficulty for which creditor has modified terms of financing receivable.

+ References

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- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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