Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Change in fair value of mortgage servicing rights
Balance, beginning of year			$ 17,491
Balance, end of year	$ 28,095		28,095		$ 17,491
MSR asset
Change in fair value of mortgage servicing rights
Balance, beginning of year	22,755	$ 7,887	17,491	$ 5,723	5,723
Additions	2,518	5,087	8,293	8,201
Sales	(65)		(113)
Changes in fair value: Due to changes in model inputs or assumptions	3,628	(604)	3,972	(1,368)
Changes in fair value: Due to customer payoffs	(741)	(97)	(1,548)	(283)
Balance, end of year	28,095	$ 12,273	28,095	$ 12,273	17,491
Mortgage loans serviced for others	$ 1,467,936		$ 1,467,936		$ 1,145,063
MSR asset as a percentage of serviced mortgage loans	1.91%		1.91%		1.53%
Key Assumptions
Weighted average constant prepayment rate (as a percent)			10.48%		14.68%
Weighted average discount rate (as a percent)			11.56%		11.45%
Weighted average life (in years)			7 years 7 months 6 days		5 years 9 months 18 days

Represents the percentage of mortgage servicing rights as a percentage of serviced mortgage loans.

No definition available.

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- Definition

Amount of decrease from changes in fair value from customer payoffs for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

No definition available.

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- Definition

Represents the amount of mortgage loans serviced for others.

+ References

No definition available.

+ Details

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- Definition

The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481229/860-50-50-3

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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 45
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Amount of increase (decrease) in fair value from changes in the inputs, assumptions, or model used to calculate the fair value of the contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(4)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481229/860-50-50-3

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- Definition

Decrease in servicing assets subsequently measured at fair value resulting from conveyance of servicing rights to unrelated parties.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
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-Paragraph 3
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481229/860-50-50-3

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- References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org/1943274/2147481229/860-50-50-2

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- Definition

Estimated rate of prepayments of principal on servicing assets and servicing liabilities.

+ References

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- Definition

Weighted-average life of financial asset and liability, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

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