Consolidated Statements Of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Interest Income
Interest and fees on loans	$ 10,416	$ 10,392	$ 30,946	$ 31,788
Interest on investment securities-available for sale	673	717	2,140	2,251
Interest on investment securities-held to maturity	35	49	110	169
Interest on deposits in other banks	80	72	183	160
Total Interest Income	11,204	11,230	33,379	34,368
Interest Expense
Interest expense on deposits, borrowings and junior subordinated debentures	611	876	1,936	2,757
Net Interest Income	10,593	10,354	31,443	31,611
Provision (benefit) for loan losses	(1,437)	550	(1,259)	1,649
Net Interest Income After Provision (Benefit) for Loan Losses	12,030	9,804	32,702	29,962
Other Operating Income
Purchased receivable income	826	695	2,250	1,886
Employee benefit plan income	609	536	1,765	1,629
Service charges on deposit accounts	536	609	1,673	1,727
Electronic banking income	520	508	1,496	1,424
Equity in earnings from RML	963	357	1,669	575
Rental income	192	190	594	577
Gain on sale of securities		33	273	296
Other income	511	434	1,369	1,096
Total Other Operating Income	4,157	3,362	11,089	9,210
Other Operating Expense
Salaries and other personnel expense	5,484	5,230	16,344	15,746
Occupancy	842	914	2,758	2,821
Marketing expense	436	435	1,308	1,315
Professional and outside services	427	370	1,103	1,045
Reserve for purchased receivables	349		349
Software expense	304	257	825	774
Equipment expense	257	291	893	887
Insurance expense	236	391	655	1,122
OREO (income) expense, net of rental income and gains on sale	249	(14)	464	(895)
Amortization of low income housing tax investments	231	224	693	675
Internet banking expense	171	162	528	473
Intangible asset amortization expense	64	70	193	211
Other operating expense	942	1,099	2,932	3,170
Total Other Operating Expense	9,992	9,429	29,045	27,344
Income Before Provision for Income Taxes	6,195	3,737	14,746	11,828
Provision for income taxes	1,991	1,125	4,568	3,357
Net Income	4,204	2,612	10,178	8,471
Less: Net income attributable to the noncontrolling interest	138	106	394	328
Net Income Attributable to Northrim BanCorp	$ 4,066	$ 2,506	$ 9,784	$ 8,143
Earnings Per Share, Basic	$ 0.63	$ 0.39	$ 1.51	$ 1.27
Earnings Per Share, Diluted	$ 0.62	$ 0.38	$ 1.49	$ 1.24
Weighted Average Shares Outstanding, Basic	6,471,572	6,436,178	6,469,673	6,431,989
Weighted Average Shares Outstanding, Diluted	6,570,772	6,554,776	6,570,287	6,553,462