Description of Business, Basis of Presentation and Significant Accounting Policies and Recently Issued Accounting Pronouncements (Policies)	6 Months Ended
	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of BusinessThe Company is primarily engaged in the business of planning, directing and coordinating the business activities of its wholly-owned subsidiary, the Bank. The Bank is headquartered in Olympia, Washington and conducts business from its 51 branch offices located throughout Washington State, the greater Portland, Oregon area, Eugene, Oregon and Boise, Idaho. The Bank’s business consists primarily of commercial lending and deposit relationships with small and medium-sized businesses and their owners in its market areas and attracting deposits from the general public. The Bank also makes real estate construction and land development loans, consumer loans and originates first mortgage loans on residential properties primarily located in its market areas. The Bank's deposits are insured by the FDIC subject to limitations.
Basis of Presentation	Basis of Presentation The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with GAAP for interim financial information and pursuant to the rules and regulations of the SEC. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. It is recommended these unaudited Condensed Consolidated Financial Statements and accompanying Notes be read with the audited Consolidated Financial Statements and the accompanying Notes included in the 2022 Annual Form 10-K. In management's opinion, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation have been included. Operating results for the six months ended June 30, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023. The accompanying Condensed Consolidated Financial Statements presented for the year end December 31, 2022 were derived from audited financial statements and do not include all disclosures required by GAAP. To prepare unaudited Condensed Consolidated Financial Statements in conformity with GAAP, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided. Management believes the judgments, estimates and assumptions used in the preparation of the unaudited Condensed Consolidated Financial Statements are appropriate based on the facts and circumstances at the time. Actual results, however, could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change relate to management's estimate of the ACL on investment securities, management's estimate of the ACL on loans, management's estimate of the ACL on unfunded commitments, management's evaluation of goodwill impairment and management's estimate of the fair value of financial instruments. The accompanying unaudited Condensed Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiary, the Bank. All significant intercompany balances and transactions among the Company and the Bank have been eliminated in consolidation. There have been reclassifications in certain prior year amounts in the unaudited Condensed Consolidated Statements of Income. Reclassifications had no effect on the prior year's net income or stockholders’ equity.
Significant Accounting Policies	Significant Accounting PoliciesThe significant accounting policies used in preparation of the unaudited Condensed Consolidated Financial Statements are disclosed in greater detail in the 2022 Annual Form 10-K. There have not been any material changes in the Company's significant accounting policies from those contained in the 2022 Annual Form 10-K during the six months ended June 30, 2023.
Recently Issued or Adopted Accounting Pronouncements	Recently Issued or Adopted Accounting Pronouncements FASB ASU 2020-04, Reference Rate Reform (Topic 848), as amended by ASU 2021-01, and ASU 2022-06 was issued in March 2020 and provides optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. The amendments in this ASU are effective for all entities as of March 12, 2020. In December 2022, FASB amended this ASU and deferred the sunset date of Topic 848 from December 31, 2022, to December 31, 2024. The amendments are elective, apply to all entities, and provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. Effective January 25, 2021, the Company adhered to the Interbank Offered Rate Fallbacks Protocol as published by the International Swaps and Derivatives Association, Inc. and recommended by the Alternative Reference Rates Committee. The majority of the Bank’s interest rate swap-related transactions indexed to LIBOR were transferred to another index during the three months ended June 30, 2023. The remaining instruments including loans, investments, and junior subordinated debentures will be transferred to a new index at the next repricing date. The Company does not expect the adoption of this ASU to have a material impact on its business operations or Consolidated Statements of Financial Condition. FASB ASU 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures, was issued in March 2022. The ASU eliminates the accounting guidance for TDR loans by creditors while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty. Specifically, rather than applying the recognition and measurement guidance for TDRs, the entity will apply the loan refinancing and restructuring guidance to determine whether a modification or other form of restructuring results in a new loan or continuation of an existing loan. Additionally, the ASU requires public business entities to disclose current-period gross write-offs by year of origination for financing receivables and net investments in leases. These amendments are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Early adoption is permitted in any interim period if an entity has adopted ASU 2016-13 and such election may be made individually to adopt the guidance related to TDRs, including related disclosures, and the presentation of gross write-offs in the vintage disclosure. This update requires prospective transition for the disclosures related to loan restructurings for borrowers experiencing financial difficulty and the presentation of gross write-offs in the vintage disclosures. The guidance related to the recognition and measurement of TDRs may be adopted on a prospective or modified retrospective transition method. The Company adopted ASU 2022-02 on a prospective basis January 1, 2023. The Company elected at the date of adoption to account for existing TDR loans as of December 31, 2022 under the Company's TDR accounting policy which is disclosed in the 2022 Annual Form 10-K. All loan modifications post adoption are accounted for under the loan modification guidance in ASC 310-20. The adoption of this ASU did not have a material impact on business operations or the Consolidated Statements of Financial Condition. FASB ASU 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (a consensus of the Emerging Issues Task Force), was issued in February 2023. The amendments in this ASU permit companies to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method, if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the income tax credits and other income tax benefits received and recognizes the net amortization and income tax credits and other income tax benefits in the statement of operations as a component of income tax expense (benefit). The amendments also require that a reporting entity disclose certain information in annual and interim reporting periods that enable investors to understand the investments that generate income tax credits and other income tax benefits from a tax credit program. The ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2023, with early adoption permitted. The amendments in the ASU can be applied either on a modified retrospective or a retrospective basis. The Company does not expect the adoption of this ASU to have a material impact on its business operations or Consolidated Statements of Financial Condition.
ACL on Investment Securities	ACL on Investment Securities The Company evaluated investment securities available for sale as of June 30, 2023 and December 31, 2022 and determined that any declines in fair value were attributable to changes in interest rates relative to where these investments fall within the yield curve and individual characteristics. Management monitors published credit ratings for adverse changes for all rated investment securities and none of these securities had a below investment grade credit rating as of both June 30, 2023 and December 31, 2022. In addition, the Company does not intend to sell these securities nor does the Company consider it more likely than not that it will be required to sell these securities before the recovery of the amortized cost basis, which may be upon maturity. Therefore, no ACL on investment securities available for sale was recorded as of June 30, 2023 and December 31, 2022. The Company also evaluated investment securities held to maturity for current expected credit losses as of June 30, 2023 and December 31, 2022. There were no investment securities held to maturity classified as nonaccrual or past due as of June 30, 2023 and December 31, 2022 and all were issued by the U.S. government and its agencies and either explicitly or implicitly guaranteed by the U.S. government, highly rated by major credit rating agencies and had a long history of no credit losses. Accordingly, the Company did not measure expected credit losses on investment securities held to maturity since the historical credit loss information adjusted for current conditions and reasonable and supportable forecasts results in an expectation that nonpayment of the amortized cost basis is zero. Therefore, no ACL on investment securities held to maturity was recorded as of June 30, 2023 and December 31, 2022.