Benefit Plans	12 Months Ended
Benefit Plans	Dec. 31, 2020
Retirement Benefits [Abstract]
Benefit Plans	Benefit Plans Deferred Compensation Plan We established a Deferred Compensation Plan which allows certain key management personnel designated by the Board of Directors of the Bank to defer up to 80% of their salary and 100% of their annual bonus. Amounts deferred earn interest that is equal to the prime rate as published in the Wall Street Journal, on the first business day of the year, which was 4.75% on January 1, 2020 and 5.50% on January 1, 2019. Our deferred compensation obligation totaled $4.7 million and $4.4 million at December 31, 2020 and 2019, respectively, and is included in interest payable and other liabilities. A similar Deferred Director Fee Plan, which allows members of the Board of Directors to defer the cash portion of their director compensation, went into effect on January 1, 2021, and the first deferral of their fees will be in July 2021. 401(k) Defined Contribution Plan Our 401(k) Defined Contribution Plan, which includes a Roth 401(k) option (the “401(k) Plan”), is available to all regular employees at least eighteen years of age who complete ninety days of service, and enter the plan during one of the four open enrollment dates (January 1, April 1, July 1, and October 1) of each year. Under the 401(k) Plan, employees can defer between 1% and 50% of their eligible compensation, up to the maximum amount allowed by the Internal Revenue Code. The Bank provides employer-match of 70% of each participant's contribution, with a maximum of $5 thousand of matching contribution per participant per year. Employer matching contributions to the 401(k) Plan vest at a rate of 20% per year over five years, per plan provisions. Employer contributions totaled $929 thousand, $874 thousand and $851 thousand for the years ended December 31, 2020, 2019 and 2018, respectively and are recorded as part of salaries and benefits expense. Employee Stock Ownership Plan Our Employee Stock Ownership Plan (the “Plan”) is also available to all employees under the same eligibility criteria of the 401(k) Plan, while employee contribution is not permitted. The Board of Directors determines a specific portion of the Bank's profits to be contributed to the employee stock ownership each year either in common stock or in cash for the purchase of Bancorp stock to be allocated to all eligible employees based on a percentage of their salaries, regardless of whether an employee is participating in the 401(k) plan or not. For all participants, employer contributions vest over a five year service period, per plan provisions. After five years of service, all employer contributions vest immediately. Bancorp issued shares of common stock, contributed them to the ESOP and recognized expenses of $1.3 million in 2020 and $1.2 million in both 2019 and 2018, based on the quoted market price on the date of contribution. Cash dividends paid on Bancorp stock held by the ESOP are used to purchase additional shares in the open market. All shares of Bancorp stock held by the ESOP are included in the calculations of basic and diluted earnings per share. The employer contributions to the ESOP are included in salaries and benefits expense. Salary Continuation Plan A Salary Continuation Plan was established for a select group of executive management, who, upon retirement, will receive twenty-five percent of their estimated salary at retirement as salary continuation benefit payments that are fixed and will be made between seven to fifteen years, depending on the executives' service period at the Bank. Each participant will need to participate in this plan for five years before vesting begins. After five years, the participant will vest ratably in the benefit over the remaining period until age 65. This Plan is unfunded and nonqualified for tax purposes and for purposes of Title I of the Employee Retirement Income Security Act of 1974. As part of the acquisition of Bank of Napa in November 2017, we assumed the salary continuation agreements for four former executive officers of Bank of Napa, under which, fixed annual retirement benefit payments will be made for ten years beginning the first day of the month following the executive reaching the age of 65. At December 31, 2020 and 2019, respectively, our liability under the Salary Continuation Plan was $3.2 million and $3.0 million recorded in interest payable and other liabilities.