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Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2021
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] |
Capital Requirements And Actual Capital Ratios | The tables below illustrate the capital requirements for the Company and the Bank and the actual capital ratios for each entity that exceed these requirements. The dividends that the Bank pays to the Company are limited to the extent necessary for the Bank to meet the regulatory requirements of a “well-capitalized” bank. The capital ratios for the Company exceed those for the Bank primarily because the $10 million trust preferred securities offerings that the Company completed in the fourth quarter of 2005 are included in the Company’s capital for regulatory purposes although they are accounted for as a liability in its financial statements. The trust preferred securities are not included in the Bank's capital ratios.
Northrim BanCorp, Inc. | Actual |  | Adequately-Capitalized |  | Well-Capitalized
(In Thousands) | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
As of December 31, 2021: |  |  |  |  |  |  |  |  |  |  |
Common equity tier 1 capital (to risk-weighted assets) | $225,412 |  |  | 13.50 | % |  | $75,137 |  |  | ≥ 4.5 | % |  | NA |  | NA
Total Capital (to risk-weighted assets) | $246,836 |  |  | 14.79 | % |  | $133,515 |  |  | ≥ 8 | % |  | NA |  | NA
Tier I Capital (to risk-weighted assets) | $235,097 |  |  | 14.08 | % |  | $100,183 |  |  | ≥ 6 | % |  | NA |  | NA
Tier I Capital (to average assets) | $235,097 |  |  | 9.03 | % |  | $104,140 |  |  | ≥ 4 | % |  | NA |  | NA
As of December 31, 2020: |  |  |  |  |  |  |  |  |  |  |
Common equity tier 1 capital (to risk-weighted assets) | $205,717 |  |  | 13.75 | % |  | $67,326 |  |  | ≥ 4.5 | % |  | NA |  | NA
Total Capital (to risk-weighted assets) | $234,363 |  |  | 15.46 | % |  | $121,275 |  |  | ≥ 8 | % |  | NA |  | NA
Tier I Capital (to risk-weighted assets) | $215,380 |  |  | 14.20 | % |  | $91,006 |  |  | ≥ 6 | % |  | NA |  | NA
Tier I Capital (to average assets) | $215,380 |  |  | 10.25 | % |  | $84,051 |  |  | ≥ 4 | % |  | NA |  | NA
Northrim Bank | Actual |  | Adequately-Capitalized |  | Well-Capitalized
(In Thousands) | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
As of December 31, 2021: |  |  |  |  |  |  |  |  |  |  |
Common equity tier 1 capital (to risk-weighted assets) | $189,447 |  |  | 11.43 | % |  | $74,585 |  |  | ≥ 4.5 | % |  | $107,735 |  |  | ≥ 6.5 | %
Total Capital (to risk-weighted assets) | $201,087 |  |  | 12.13 | % |  | $132,621 |  |  | ≥ 8 | % |  | $165,777 |  |  | ≥ 10 | %
Tier I Capital (to risk-weighted assets) | $189,348 |  |  | 11.42 | % |  | $99,482 |  |  | ≥ 6 | % |  | $132,643 |  |  | ≥ 8 | %
Tier I Capital (to average assets) | $189,348 |  |  | 7.31 | % |  | $103,610 |  |  | ≥ 4 | % |  | $129,513 |  |  | ≥ 5 | %
As of December 31, 2020: |  |  |  |  |  |  |  |  |  |  |
Common equity tier 1 capital (to risk-weighted assets) | $178,532 |  |  | 11.89 | % |  | $67,569 |  |  | ≥ 4.5 | % |  | $97,599 |  |  | ≥ 6.5 | %
Total Capital (to risk-weighted assets) | $197,233 |  |  | 13.13 | % |  | $120,172 |  |  | ≥ 8 | % |  | $150,216 |  |  | ≥ 10 | %
Tier I Capital (to risk-weighted assets) | $178,429 |  |  | 11.88 | % |  | $90,116 |  |  | ≥ 6 | % |  | $120,154 |  |  | ≥ 8 | %
Tier I Capital (to average assets) | $178,429 |  |  | 8.55 | % |  | $83,476 |  |  | ≥ 4 | % |  | $104,344 |  |  | ≥ 5 | %

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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