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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)			12 Months Ended
	Oct. 31, 2021	Oct. 15, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021
Business Acquisition [Line Items]
Intangibles amortization			$ 3,684,000	$ 3,531,000	$ 3,956,000
Servicing fee income			$ 3,400,000	$ 3,900,000	$ 3,300,000
Contractually specified servicing fee income, statement of income or comprehensive income [Extensible Enumeration]			SBA consulting fees	SBA consulting fees	SBA consulting fees
SBA servicing asset			$ 392,400,000	$ 414,200,000
Goodwill impairment	$ 0
Discontinued Operations, Disposed of by Sale | First Bank Insurance Services
Business Acquisition [Line Items]
Finite-lived intangible assets						$ 2,800,000
Minimum
Business Acquisition [Line Items]
Identifiable intangible assets, useful life			5 years
Core Deposits | Select
Business Acquisition [Line Items]
Finite-lived intangibles acquired		$ 9,200,000
Core Deposits | Minimum
Business Acquisition [Line Items]
Identifiable intangible assets, useful life			10 years
Customer Lists | Discontinued Operations, Disposed of by Sale | First Bank Insurance Services
Business Acquisition [Line Items]
Finite-lived intangible assets						$ 2,800,000
Customer Lists | Minimum
Business Acquisition [Line Items]
Identifiable intangible assets, useful life			5 years

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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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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Indicates line item in statement of income or comprehensive income that includes contractually specified servicing fee income.

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All amounts that, per contract, are due to the servicer in exchange for servicing the financial asset and would no longer be received by a servicer if the beneficial owners of the serviced assets (or their trustees or agents) were to exercise their actual or potential authority under the contract to shift the servicing to another servicer. Depending on the servicing contract, those fees may include some or all of the difference between the interest rate collected on the asset being serviced and the rate to be paid to the beneficial owners of the asset.

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Amount classified as intangible assets, excluding goodwill, attributable to disposal group held for sale or disposed of.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method.

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