Fair Value - Additional information (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value determination of loans held for sale description	The fair value of conventional loans held for sale is determined using the current 15 day forward contract price for either 15 or 30 year conventional mortgages (Level 2). The fair value of permanent construction loans held for sale is determined using the current 60 day forward contract price for 15 or 30 year conventional mortgages which is then adjusted for unobservable market data such as estimated fall out rates and estimated time from origination to completion of construction (Level 3).
Loans held for sale, fair value disclosure	$ 162,947,000	$ 221,616,000
Individually Analyzed Financing Receivables, Provisional Expenses	4,100,000	2,900,000	$ 12,000
Mortgage servicing rights	19,538,000	13,153,000
Valuation Allowance of Mortgage Servicing Rights	2,700,000	8,500,000
Mortgage Servicing Rights Expense		8,000,000.0	234,000
Proceeds from Collection of Loans Receivable	5,800,000
Real Estate Held-for-sale, Increase (Decrease) in Fair Value	0	0	$ 264,000
Residential Mortgage and Permanent Construction Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale, fair value disclosure	0
Residential Mortgage Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale, fair value disclosure	28,800,000	98,600,000
Loans held for sale, contractual balance	27,700,000	93,200,000
Loss on sale of loans held for sale for the change in fair value	5,000,000.0	(5,400,000)
Permanent Construction Loans [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans held for sale, fair value disclosure	134,200,000	123,000,000.0
Loans held for sale, contractual balance	125,000,000.0	109,500,000
Loss on sale of loans held for sale for the change in fair value	3,700,000	(13,500,000)
Collateral Dependent Loan [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Individually Analyzed Financing Receivable, Recorded Investment	11,300,000	11,700,000
Individually Analyzed Financing Receivable, Related Allowance	$ 7,100,000	$ 2,900,000
Minimum [Member] \| Real Estate Held For Sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value input discount rate	0.00%
Maximum [Member] \| Real Estate Held For Sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value input discount rate	30.00%

Fair value determination of loans held for sale description.

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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Individually analyzed financing receivable recorded investment.

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Individually analyzed financing receivable related allowance.

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Individually analyzed financing receivables provisional expenses.

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Fair value measurement of mortgage servicing rights.

+ References

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Mortgage servicing rights expense.

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- Definition

Fair value of real estate held for sales during the period

+ References

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Reduction in valuation allowance of Mortgage servicing rights.

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- Definition

For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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.

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Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

+ References

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- Definition

The cash inflow associated with the collection, including prepayments, of loans receivable issued for financing of goods and services.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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