Employee Benefit Plans (Notes)	12 Months Ended
Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	Employee Benefit Plans On July 1, 1992, the Northrim Bank implemented a profit sharing plan, including a provision designed to qualify the plan under Section 401(k) of the Internal Revenue Code of 1986, as amended. Employees may participate in the plan if they work more than 1,000 hours per year. Under the plan, each eligible participant may contribute a percentage of their eligible salary to a maximum established by the IRS, and Northrim Bank provides for a mandatory $0.25 match for each $1.00 contributed by an employee up to 6% of the employee’s salary. Northrim Bank may increase the matching contribution at the discretion of the Board of Directors. The plan also allows Northrim Bank to make a discretionary contribution on behalf of eligible employees based on their length of service to Northrim Bank. To be eligible for 401(k) contributions, participants must be employed at the end of the plan year, except in the case of death, disability or retirement. Northrim Bank expensed $673,000, $620,000, and $721,000, in 2013, 2012, and 2011, respectively, for 401(k) contributions and included these expenses in salaries and other personal expense in the Consolidated Statements of Income. On July 1, 1994, Northrim Bank implemented a Supplemental Executive Retirement Plan for executive officers of Northrim Bank whose retirement benefits under the 401(k) plan have been limited under provisions of the Internal Revenue Code. Contributions to this plan totaled $220,000, $302,000, and $335,000, in 2013, 2012, and 2011, respectively. These expenses are included in salaries and other personnel expense in the Consolidated Statements of Income. At December 31, 2013 and 2012, the balance of the accrued liability for this plan was included in other liabilities and totaled $2.5 million and $3.1 million, respectively. In February of 2002, Northrim Bank implemented a non-qualified deferred compensation plan in which certain of the executive officers participate. Northrim Bank's net liability under this plan is dependent upon market gains and losses on assets held in the plan. In 2013, 2012 and 2011, Northrim Bank recognized increases in its liability of $99,000, $330,000, and $132,000, respectively. These expenses are included in salaries and other personnel expense in the Consolidated Statements of Income. At December 31, 2013 and 2012, the balance of the accrued liability for this plan was included in other liabilities and totaled $1.2 million and $1.5 million, respectively. In November of 2011, Northrim Bank implemented a Profit Sharing Plan. Executive officers, in addition to all employees of Northrim Bank who commenced employment prior to the January 1 that precedes or coincides with a performance period, are eligible to participate in payments made from a profit sharing pool calculated in accordance with the provisions of the Profit Sharing Plan. The aggregate amount to be paid to employees under the Profit Sharing Plan is determined using performance goals that are established by the Compensation Committee of the Board. If the performance goals are met for the year, the profit sharing pool for the period is calculated based on a formula that is also approved by the Compensation Committee each year. The Compensation Committee approved management’s recommendation based upon the calculated payout under the Profit Sharing Plan’s methodology resulting in aggregate payouts of $858,000 and $894,000 for 2013 and 2012, respectively. Information concerning the calculation of employee payments under the Profit Sharing Plan is set forth under the heading “Performance Based Annual Payment” in the Company’s definitive proxy statement for the 2014 Annual Shareholders’ Meeting and is incorporated into this report by reference.

Employee Benefit Plans

On July 1, 1992, the Northrim Bank implemented a profit sharing plan, including a provision designed to qualify the plan under Section 401(k) of the Internal Revenue Code of 1986, as amended. Employees may participate in the plan if they work more than 1,000 hours per year. Under the plan, each eligible participant may contribute a percentage of their eligible salary to a maximum established by the IRS, and Northrim Bank provides for a mandatory $0.25 match for each $1.00 contributed by an employee up to 6% of the employee’s salary. Northrim Bank may increase the matching contribution at the discretion of the Board of Directors. The plan also allows Northrim Bank to make a discretionary contribution on behalf of eligible employees based on their length of service to Northrim Bank.

To be eligible for 401(k) contributions, participants must be employed at the end of the plan year, except in the case of death, disability or retirement. Northrim Bank expensed $673,000, $620,000, and $721,000, in 2013, 2012, and 2011, respectively, for 401(k) contributions and included these expenses in salaries and other personal expense in the Consolidated Statements of Income.

On July 1, 1994, Northrim Bank implemented a Supplemental Executive Retirement Plan for executive officers of Northrim Bank whose retirement benefits under the 401(k) plan have been limited under provisions of the Internal Revenue Code. Contributions to this plan totaled $220,000, $302,000, and $335,000, in 2013, 2012, and 2011, respectively. These expenses are included in salaries and other personnel expense in the Consolidated Statements of Income. At December 31, 2013 and 2012, the balance of the accrued liability for this plan was included in other liabilities and totaled $2.5 million and $3.1 million, respectively.

In February of 2002, Northrim Bank implemented a non-qualified deferred compensation plan in which certain of the executive officers participate. Northrim Bank's net liability under this plan is dependent upon market gains and losses on assets held in the plan. In 2013, 2012 and 2011, Northrim Bank recognized increases in its liability of $99,000, $330,000, and $132,000, respectively. These expenses are included in salaries and other personnel expense in the Consolidated Statements of Income. At December 31, 2013 and 2012, the balance of the accrued liability for this plan was included in other liabilities and totaled $1.2 million and $1.5 million, respectively.

In November of 2011, Northrim Bank implemented a Profit Sharing Plan. Executive officers, in addition to all employees of Northrim Bank who commenced employment prior to the January 1 that precedes or coincides with a performance period, are eligible to participate in payments made from a profit sharing pool calculated in accordance with the provisions of the Profit Sharing Plan. The aggregate amount to be paid to employees under the Profit Sharing Plan is determined using performance goals that are established by the Compensation Committee of the Board. If the performance goals are met for the year, the profit sharing pool for the period is calculated based on a formula that is also approved by the Compensation Committee each year. The Compensation Committee approved management’s recommendation based upon the calculated payout under the Profit Sharing Plan’s methodology resulting in aggregate payouts of $858,000 and $894,000 for 2013 and 2012, respectively. Information concerning the calculation of employee payments under the Profit Sharing Plan is set forth under the heading “Performance Based Annual Payment” in the Company’s definitive proxy statement for the 2014 Annual Shareholders’ Meeting and is incorporated into this report by reference.