Consolidated Statements Of Income (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Interest Income
Interest and fees on loans	$ 10,709	$ 11,212	$ 21,396	$ 22,634
Interest on investment securities-available for sale	663	1,245	1,534	2,499
Interest on investment securities-held to maturity	59	70	120	145
Interest on overnight investments	52	42	85	65
Interest on domestic certificate of deposit	3		3
Total Interest Income	11,486	12,569	23,138	25,343
Interest Expense
Interest expense on deposits, borrowings and junior subordinated debentures	904	1,466	1,881	2,936
Net Interest Income	10,582	11,103	21,257	22,407
Provision for loan losses	550	1,375	1,099	2,750
Net Interest Income After Provision for Loan Losses	10,032	9,728	20,158	19,657
Other Operating Income
Service charges on deposit accounts	594	762	1,118	1,462
Employee benefit plan income	593	530	1,093	951
Purchased receivable income	565	595	1,191	909
Electronic banking income	467	435	916	835
Gain on sale of securities		132	263	413
Other income	585	588	1,060	1,133
Total Other Operating Income	3,070	3,222	5,848	5,815
Other Operating Expense
Salaries and other personnel expense	5,200	5,402	10,516	11,022
Occupancy	997	897	1,907	1,816
Marketing expense	443	439	880	878
Professional and outside services	338	323	675	565
Insurance expense	295	422	731	980
Equipment expense	292	244	596	517
Software expense	277	215	517	435
Amortization of low income housing tax investments	235	218	451	444
Internet banking expense	158	150	311	296
Operation losses, net	82	130	161	202
Intangible asset amortization expense	71	77	141	153
Impairment on purchased receivables, net		406	2	407
OREO (income) expense, net of rental income and gains on sale	(742)	(40)	(881)	62
Other operating expense	943	905	1,908	1,905
Total Other Operating Expense	8,589	9,788	17,915	19,682
Income Before Provision for Income Taxes	4,513	3,162	8,091	5,790
Provision for income taxes	1,198	912	2,232	1,614
Net Income	3,315	2,250	5,859	4,176
Less: Net income attributable to the noncontrolling interest	133	110	222	136
Net Income Attributable to Northrim BanCorp	3,182	2,140	5,637	4,040
Earnings Per Share, Basic	$ 0.49	$ 0.34	$ 0.88	$ 0.63
Earnings Per Share, Diluted	$ 0.49	$ 0.33	$ 0.86	$ 0.62
Weighted Average Shares Outstanding, Basic	6,431,060	6,386,925	6,429,895	6,386,343
Weighted Average Shares Outstanding, Diluted	6,549,744	6,473,622	6,548,557	6,470,966
RML [Member]
Other Operating Income
Equity in earnings (loss) from entity	270	182	218	109
Elliott Cove [Member]
Other Operating Income
Equity in earnings (loss) from entity	$ (4)	$ (2)	$ (11)	$ 3