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Regulatory Matters - Summary of Capital Requirements (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Northrim Bank |  |
Common equity tier 1 capital (to risk-weighted assets) |  |
Common equity tier 1 capital (to risk-weighted assets), actual amount | $ 189,447 | $ 178,532
Common equity tier 1 capital (to risk-weighted assets), actual ratio | 11.43% | 11.89%
Common equity tier 1 capital (to risk-weighted assets), adequately-capitalized amount | $ 74,585 | $ 67,569
Common equity tier 1 capital (to risk-weighted assets), adequately-capitalized ratio | 4.50% | 4.50%
Common equity tier 1 capital (to risk-weighted assets), well-capitalized amount | $ 107,735 | $ 97,599
Common equity tier 1 capital (to risk-weighted assets), well-capitalized ratio | 6.50% | 6.50%
Total Capital (to risk-weighted assets) |  |
Total Capital (to risk-weighted assets), actual amount | $ 201,087 | $ 197,233
Total Capital (to risk-weighted assets), actual ratio | 0.1213 | 0.1313
Total Capital (to risk-weighted assets), adequately-capitalized amount | $ 132,621 | $ 120,172
Total Capital (to risk-weighted assets), adequately-capitalized ratio | 0.08 | 0.08
Total Capital (to risk-weighted assets), well-capitalized amount | $ 165,777 | $ 150,216
Total Capital (to risk-weighted assets), well-capitalized ratio | 0.10 | 0.10
Tier I Capital (to risk-weighted assets) |  |
Tier 1 Capital (to risk-weighted assets), actual amount | $ 189,348 | $ 178,429
Tier 1 Capital (to risk-weighted assets), actual ratio | 0.1142 | 0.1188
Tier 1 Capital (to risk-weighted assets), adequately-capitalized amount | $ 99,482 | $ 90,116
Tier 1 capital (to risk-weighted assets), adequately capitalized ratio | 0.06 | 0.06
Tier 1 Capital (to risk-weighted assets), well-capitalized amount | $ 132,643 | $ 120,154
Tier 1 Capital (to risk-weighted assets), well-capitalized ratio | 0.08 | 0.08
Tier I Capital (to average assets) |  |
Tier I Capital (to average assets), actual amount | $ 189,348 | $ 178,429
Tier I Capital (to average assets), actual ratio | 0.0731 | 0.0855
Tier I Capital (to average assets), adequately-capitalized amount | $ 103,610 | $ 83,476
Tier 1 capital (to average assets), adequately-capitalized ratio | 0.04 | 0.04
Tier I Capital (to average assets), well-capitalized amount | $ 129,513 | $ 104,344
Tier I Capital (to average assets), well-capitalized ratio | 0.05 | 0.05
Northrim Bancorp, Inc. |  |
Common equity tier 1 capital (to risk-weighted assets) |  |
Common equity tier 1 capital (to risk-weighted assets), actual amount | $ 225,412 | $ 205,717
Common equity tier 1 capital (to risk-weighted assets), actual ratio | 13.50% | 13.75%
Common equity tier 1 capital (to risk-weighted assets), adequately-capitalized amount | $ 75,137 | $ 67,326
Common equity tier 1 capital (to risk-weighted assets), adequately-capitalized ratio | 4.50% | 4.50%
Total Capital (to risk-weighted assets) |  |
Total Capital (to risk-weighted assets), actual amount | $ 246,836 | $ 234,363
Total Capital (to risk-weighted assets), actual ratio | 0.1479 | 0.1546
Total Capital (to risk-weighted assets), adequately-capitalized amount | $ 133,515 | $ 121,275
Total Capital (to risk-weighted assets), adequately-capitalized ratio | 0.08 | 0.08
Tier I Capital (to risk-weighted assets) |  |
Tier 1 Capital (to risk-weighted assets), actual amount | $ 235,097 | $ 215,380
Tier 1 Capital (to risk-weighted assets), actual ratio | 0.1408 | 0.1420
Tier 1 Capital (to risk-weighted assets), adequately-capitalized amount | $ 100,183 | $ 91,006
Tier 1 capital (to risk-weighted assets), adequately capitalized ratio | 0.06 | 0.06
Tier I Capital (to average assets) |  |
Tier I Capital (to average assets), actual amount | $ 235,097 | $ 215,380
Tier I Capital (to average assets), actual ratio | 0.0903 | 0.1025
Tier I Capital (to average assets), adequately-capitalized amount | $ 104,140 | $ 84,051
Tier 1 capital (to average assets), adequately-capitalized ratio | 0.04 | 0.04

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