Fair Value Measurements - Valuation Assumptions (Details)	Sep. 30, 2023	Dec. 31, 2022
Pull through rate \| In-house valuation of collateral, External pricing model \| Weighted Average \| Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitment, measurement input (percent)	0.9362	0.9318
Constant prepayment rate \| Discounted cash flow \| Mortgage servicing rights \| Minimum \| Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.0748	0.0662
Constant prepayment rate \| Discounted cash flow \| Mortgage servicing rights \| Maximum \| Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.1513	0.0743
Constant prepayment rate \| Discounted cash flow \| Commercial servicing rights \| Minimum \| Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.0419	0.0419
Constant prepayment rate \| Discounted cash flow \| Commercial servicing rights \| Maximum \| Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.2287	0.2287
Discount rate \| Discounted cash flow \| Mortgage servicing rights \| Weighted Average \| Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)		0.1125
Discount rate \| Discounted cash flow \| Mortgage servicing rights \| Minimum \| Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.0950
Discount rate \| Discounted cash flow \| Mortgage servicing rights \| Maximum \| Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.1100
Discount rate \| Discounted cash flow \| Commercial servicing rights \| Weighted Average \| Fair Value, Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights, measurement input (percent)	0.1200	0.1200
Estimated capital costs to complete improvements \| Valuation, Fair Value Of Collateral \| Weighted Average \| Fair Value, Measurements, Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned, measurement input (percent)	0.45

Value of input used to measure derivative asset.

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

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