Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2012

Regulatory Matters [Abstract]

Capital Requirements And Actual Capital Ratios

Northrim BanCorp, Inc.	Actual				Adequately-Capitalized			Well-Capitalized
(In Thousands)	Amount		Ratio		Amount		Ratio	Amount		Ratio
As of December 31, 2012:
Total Capital (to risk-weighted assets)	$	158,820	16.60	%	$	76,540	> 8.0%	$	95,675	> 10.0%
Tier I Capital (to risk-weighted assets)	$	146,802	15.34	%	$	38,280	> 4.0%	$	57,419	>  6.0%
Tier I Capital (to average assets)	$	146,802	12.99	%	$	45,205	> 4.0%	$	56,506	>  5.0%
As of December 31, 2011:
Total Capital (to risk-weighted assets)	$	147,848	16.46	%	$	71,858	> 8.0%	$	89,823	> 10.0%
Tier I Capital (to risk-weighted assets)	$	136,553	15.20	%	$	35,935	> 4.0%	$	53,903	>  6.0%
Tier I Capital (to average assets)	$	136,553	12.83	%	$	42,573	> 4.0%	$	53,216	>  5.0%
Northrim Bank		Actual			Adequately-Capitalized			Well-Capitalized
(In Thousands)		Amount	Ratio			Amount	Ratio		Amount	Ratio
As of December 31, 2012:
Total Capital (to risk-weighted assets)	$	143,684	15.12	%	$	76,023	> 8.0%	$	95,029	> 10.0%
Tier I Capital (to risk-weighted assets)	$	131,748	13.87	%	$	37,995	> 4.0%	$	56,993	>  6.0%
Tier I Capital (to average assets)	$	131,748	11.74	%	$	44,889	> 4.0%	$	56,111	>  5.0%
As of December 31, 2011:
Total Capital (to risk-weighted assets)	$	135,394	15.14	%	$	71,542	> 8.0%	$	89,428	> 10.0%
Tier I Capital (to risk-weighted assets)	$	124,152	13.89	%	$	35,753	> 4.0%	$	53,629	>  6.0%
Tier I Capital (to average assets)	$	124,152	11.72	%	$	42,373	> 4.0%	$	52,966	>  5.0%