Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Change in fair value of mortgage servicing rights
Balance, beginning of year			$ 86,990
Balance, end of year	$ 121,688		121,688		$ 86,990
MSR asset
Change in fair value of mortgage servicing rights
Balance, beginning of year	100,475	$ 142,125	86,990	$ 143,742	143,742
Additions	11,210	15,815	18,510	50,115
Sales		(31,850)	(1,876)	(84,633)
Changes in fair value: Due to changes in model inputs or assumptions	13,237	4,536	24,093	28,674
Changes in fair value: Due to customer payoffs	(3,234)	(6,129)	(6,029)	(13,401)
Balance, end of year	121,688	124,497	121,688	124,497	86,990
Mortgage loans serviced for others	$ 6,940,571		$ 6,940,571		$ 6,355,927
MSR asset as a percentage of serviced mortgage loans	1.75%		1.75%		1.37%
Mortgage servicing assets adjustment, fair value		$ 9,200		$ 18,900
Key Assumptions
Weighted average constant prepayment rate (as a percent)			8.42%		10.02%
Weighted average discount rate (as a percent)			12.15%		14.32%
Weighted average life (in years)			7 years 10 months 24 days		7 years 1 month 6 days

Amount of fair value adjustment to mortgage servicing assets.

No definition available.

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- Definition

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

+ References

No definition available.

+ Details

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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.

+ Details

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(2)
-URI https://asc.fasb.org/extlink&oid=128311188&loc=d3e122625-111746

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 2
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
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-URI https://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745

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-Publisher FASB
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/extlink&oid=128311188&loc=d3e122625-111746

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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-URI https://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

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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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(4)(i)
-URI https://asc.fasb.org/extlink&oid=128311188&loc=d3e122625-111746

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128311188&loc=d3e122625-111746

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- References

No definition available.

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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/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=128311188&loc=d3e122596-111746

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- Definition

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

+ References

+ Details

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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