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Goodwill and Other Intangible Assets - Textuals (Details) | 12 Months Ended
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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

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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266 + Details
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