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Goodwill and Other Intangible Assets - Textuals (Details)	12 Months Ended
	Dec. 31, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment Loss	$ 0
Premier Commercial | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years
Washington Banking | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years
Valley Community Bancshares | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years
Puget Sound Merger | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Useful life	10 years

X

- Definition

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.

+ References

No definition available.

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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

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
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-Name Accounting Standards Codification
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