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Mortgage Banking - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) CPR	Sep. 30, 2024 USD ($) CPR
Schedule of changes in the reserve for mortgage loan [Abstract]
Assumed average prepayment speed | CPR			9	9
Average discount rate			10.66%	10.64%
Mortgage servicing rights [Abstract]
Residential mortgage loans sold			$ 858,300,000	$ 843,600,000
Period of putback response			60 days
Mortgage loan servicing putback expenses	$ 0	$ 0	$ 0	0
Reserve for mortgage loan servicing putback expenses	$ 500,000	$ 500,000	500,000	500,000
Gains on sale of mortgage banking			$ 15,100,000	$ 14,800,000

X

- Definition

The estimated speed of prepayments of principal on financial assets which may be one of the factors applied in estimating the fair value of servicing assets and servicing liabilities not shown as a percentage, measured in CPR (conditional prepayment rate).

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- Definition

Mortgage loan servicing Ppack expenses.

+ References

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- Definition

The period of time the company is required to provide a response to putback requests.

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Schedule of changes in the reserve for mortgage loan [Abstract]

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- Definition

The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

+ References

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Amount of decrease in investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from sale.

+ References

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-Topic 948
-SubTopic 310
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Amount of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, written down.

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Discount rate used to estimate the fair value of servicing assets and servicing liabilities.

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-Topic 860
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