Disclosures About Fair Value of Financial Instruments - Additional Quantitative Information, Assets Measured at Fair Value, Recurring and Nonrecurring Basis, Level 3 Input (Details)	12 Months Ended
Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Quantitative information for Level 3 Fair Value Measurements Assets
Loans held for sale	$ 9,900,000	$ 25,100,000
Level 3
Quantitative information for Level 3 Fair Value Measurements Assets
Loans individually assessed	9,910,852,000	9,648,825,000
Loans held for sale	9,913,000	25,056,000
Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights	95,000	380,000
Real estate owned, net	413,000	873,000
Fair Value, Measurements, Nonrecurring \| Level 3
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights	95,000	380,000
Real estate owned, net	413,000	873,000
Fair Value, Measurements, Nonrecurring \| Loans individually assessed
Quantitative information for Level 3 Fair Value Measurements Assets
Loans individually assessed	15,416,000	46,968,000
Fair Value, Measurements, Nonrecurring \| Loans individually assessed \| Level 3
Quantitative information for Level 3 Fair Value Measurements Assets
Loans individually assessed	15,416,000	$ 46,968,000
Real estate owned, net \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Real estate owned, net	$ 413,000
Estimated cost to sell \| Loans individually assessed \| Appraisal value \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Loans individually assessed, measurement input	0.10
Estimated cost to sell \| Real estate owned, net \| Appraisal value \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Real estate owned, net, measurement input	0.10
Discount rate \| Loans individually assessed \| Discounted cash flow \| Minimum \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Loans individually assessed, measurement input	0.0648
Discount rate \| Loans individually assessed \| Discounted cash flow \| Weighted Average \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Loans individually assessed, measurement input	0.0648
Annual service cost \| Discounted cash flow \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights, measurement input	85
Prepayment rate \| Discounted cash flow \| Minimum \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights, measurement input	0.066
Prepayment rate \| Discounted cash flow \| Maximum \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights, measurement input	0.122
Prepayment rate \| Discounted cash flow \| Weighted Average \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights, measurement input	0.090
Expected life (months) \| Discounted cash flow \| Minimum \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights, term	58 months 6 days
Expected life (months) \| Discounted cash flow \| Maximum \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights, term	105 months
Expected life (months) \| Discounted cash flow \| Weighted Average \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights, term	77 months 18 days
Forward yield curve \| Discounted cash flow \| Minimum \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights, measurement input	0.0412
Forward yield curve \| Discounted cash flow \| Maximum \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights, measurement input	0.0504
Option adjusted spread \| Discounted cash flow \| Fair Value, Measurements, Nonrecurring
Quantitative information for Level 3 Fair Value Measurements Assets
Mortgage servicing rights, measurement input	0.0700
Estimated pull-through rate \| Appraisal value
Quantitative information for Level 3 Fair Value Measurements Assets
Loans held for sale, measurement input	1

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- Definition

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+ References

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- Definition

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+ References

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- Definition

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+ References

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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

No definition available.

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- Definition

Value of input used to measure loan, held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI https://asc.fasb.org/subtopic&trid=2196772

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- Definition

Fair value portion of mortgage loans held-for-sale.

+ References

No definition available.

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- Definition

Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10(4))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

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- Definition

Value of input used to measure real estate owned by financial institution by financial institution which is not directly related to its business.

+ References

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