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Fair Value of Assets and Liabilities - Summary of the Significant Unobservable Inputs (Details) - Significant Other Unobservable Inputs (Level 3) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Discounted Cash Flow Technique | Weighted average Discount Rate (as a percent)
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Mortgage Servicing Rights, Fair Value Inputs	0.0928	0.0948
Discounted Cash Flow Technique | Mortgage Servicing Rights
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Mortgage Servicing Rights, at Fair Value	$ 25,925	$ 26,851
Discounted Cash Flow Technique | Mortgage Servicing Rights | Weighted Average Constant Prepayment Rate (as a Percent)
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Mortgage Servicing Rights, Fair Value Inputs	0.042	0.0406
Pricing Model | Interest Rate Lock Commitments
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	$ 152	$ 148
Pricing Model | Weighted Average Closing Ratio (as a percent) | Interest Rate Lock Commitments
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs	0.9147	0.8553
Minimum | Discounted Cash Flow Technique | Measurement Input, Discount Rate
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Mortgage Servicing Rights, Fair Value Inputs	0.0864	0.0765
Minimum | Discounted Cash Flow Technique | Mortgage Servicing Rights
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Fair Value Assumption, Date of Securitization or Asset-Backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Prepayment Speed	3.10%	2.98%
Minimum | Pricing Model | Weighted Average Closing Ratio (as a percent) | Interest Rate Lock Commitments
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs	0.754	0.835
Maximum | Discounted Cash Flow Technique | Measurement Input, Discount Rate
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Mortgage Servicing Rights, Fair Value Inputs	0.1044	0.1079
Maximum | Discounted Cash Flow Technique | Mortgage Servicing Rights
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Fair Value Assumption, Date of Securitization or Asset-Backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Prepayment Speed	17.61%	21.18%
Maximum | Pricing Model | Weighted Average Closing Ratio (as a percent) | Interest Rate Lock Commitments
Level3 Assets And Liabilities Fair Value And Fair Value Unobservable Inputs [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Fair Value Inputs	0.99	0.99

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- Definition

Level 3 Assets and Liabilities, Fair Value and Fair Value Unobservable Inputs [Line Items]

+ References

No definition available.

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+ References

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Estimated rate of prepayment of principal on financial assets for initial fair value measurement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-3

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Value of input used to measure net derivative asset (liability).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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Fair value as of the balance sheet date of all derivatives not designated as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-SubTopic 10
-Topic 815
-Publisher FASB
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Value of input used to measure servicing asset.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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