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Derivative Financial Instruments - Weighted-average Rates for Interest Rate Swaps (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Derivative [Line Items]
Notional Amount	$ 1,052,236,000	$ 767,070,000
Hedging Instrument | Interest Rate Swaps | Fair value hedges
Derivative [Line Items]
Notional Amount	$ 43,940,000	$ 0
Remaining Maturity (in years)	7 years 7 months 13 days	0 years
Hedging Instrument | Interest Rate Swaps | Received | Fair value hedges
Derivative [Line Items]
Weighted-Average Interest Rate	4.33%	0.00%
Hedging Instrument | Interest Rate Swaps | Paid | Fair value hedges
Derivative [Line Items]
Weighted-Average Interest Rate	3.78%	0.00%
Non-Hedging | Financial Institution | Interest Rate Swaps
Derivative [Line Items]
Notional Amount	$ 453,319,000	$ 358,527,000
Remaining Maturity (in years)	3 years 3 months 21 days	3 years 4 months 9 days
Non-Hedging | Financial Institution | Interest Rate Swaps | Received
Derivative [Line Items]
Weighted-Average Interest Rate	6.75%	7.67%
Non-Hedging | Financial Institution | Interest Rate Swaps | Paid
Derivative [Line Items]
Weighted-Average Interest Rate	5.48%	5.04%
Non-Hedging | Financial Institution | Interest Rate Cap
Derivative [Line Items]
Notional Amount	$ 25,000,000	$ 0
Remaining Maturity (in years)	1 year 10 months 20 days	0 years
Non-Hedging | Financial Institution | Interest Rate Cap | Received
Derivative [Line Items]
Weighted-Average Interest Rate	4.50%	0.00%
Non-Hedging | Financial Institution | Interest Rate Cap | Paid
Derivative [Line Items]
Weighted-Average Interest Rate	0.00%	0.00%
Non-Hedging | Customer | Interest Rate Swaps
Derivative [Line Items]
Notional Amount	$ 453,319,000	$ 358,527,000
Remaining Maturity (in years)	3 years 3 months 21 days	3 years 4 months 9 days
Non-Hedging | Customer | Interest Rate Swaps | Received
Derivative [Line Items]
Weighted-Average Interest Rate	5.48%	5.04%
Non-Hedging | Customer | Interest Rate Swaps | Paid
Derivative [Line Items]
Weighted-Average Interest Rate	6.75%	7.67%
Non-Hedging | Customer | Interest Rate Cap
Derivative [Line Items]
Notional Amount	$ 25,000,000	$ 0
Remaining Maturity (in years)	1 year 10 months 20 days	0 years
Non-Hedging | Customer | Interest Rate Cap | Received
Derivative [Line Items]
Weighted-Average Interest Rate	0.00%	0.00%
Non-Hedging | Customer | Interest Rate Cap | Paid
Derivative [Line Items]
Weighted-Average Interest Rate	4.50%	0.00%

X

- Definition

Derivative, Weighted-Average Interest Rate

+ 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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

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Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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