Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating Activities:
Net income	$ 15,156	$ 13,264
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Gain on sale of securities, net	0	(11)
Gain on sale of Northrim Benefits Group	0	(4,443)
Loss on disposal of premises and equipment	3	3
Depreciation and amortization of premises and equipment	1,504	2,042
Amortization of software	670	184
Intangible asset amortization	53	79
Amortization of investment security premium, net of discount accretion	156	172
Change in fair value of marketable equity securities	143	0
(Increase) decrease deferred tax asset, net	(207)	617
Stock-based compensation	571	435
Deferral of loan fees and (costs), net	199	(459)
(Benefit) provision for loan losses	(300)	3,200
(Benefit) reserve for purchased receivables	(4)	29
Additions to mortgage servicing rights carried at fair value	(2,662)	(2,086)
Change in fair value of mortgage servicing rights carried at fair value	272	62
Gain on sale of loans	(11,666)	(13,929)
Proceeds from the sale of loans held for sale	412,562	419,783
Origination of loans held for sale	(413,553)	(421,472)
Gain on sale of other real estate owned	(133)	(369)
Impairment on other real estate owned	0	340
Impairment on equity method investment	804	0
Net changes in assets and liabilities:
Increase in accrued interest receivable	(402)	(396)
Decrease (increase) in other assets	683	(1,459)
Decrease in other liabilities	(6,061)	(40)
Net Cash Used by Operating Activities	(2,212)	(4,454)
Investment in securities:
Purchases of investment securities available for sale	(48,570)	(16,283)
Purchases of marketable equity securities	(998)	0
Purchases of FHLB stock	0	(3,665)
Proceeds from sales/calls/maturities of securities available for sale	89,903	77,865
Proceeds from calls/sales of marketable equity securities	500	0
Proceeds from redemption of FHLB stock	12	3,514
Decrease in purchased receivables, net	9,529	7,532
Increase in loans, net	(28,789)	(15,379)
Proceeds from sale of other real estate owned	612	3,265
Proceeds from the sale of Northrim Benefits Group	0	4,625
Proceeds from sale of premises and equipment	3	116
Purchases of premises and equipment	(2,280)	(2,889)
Net Cash Provided by Investing Activities	19,922	58,701
Financing Activities:
Decrease in deposits	(25,015)	(9,337)
Increase in securities sold under repurchase agreements	4,683	3,477
(Decrease) increase in borrowings	(80)	3,049
Distributions to noncontrolling interest	0	(445)
Repayment of junior subordinated debentures	0	(8,248)
Repurchase of common stock	0	(1,608)
Proceeds from the issuance of common stock	194	0
Cash dividends paid	(5,154)	(4,417)
Net Cash Used by Financing Activities	(25,372)	(17,529)
Net Change in Cash and Cash Equivalents	(7,662)	36,718
Cash and Cash Equivalents at Beginning of Period	77,841	50,551
Cash and Cash Equivalents at End of Period	70,179	87,269
Supplemental Information:
Income taxes paid	324	7,764
Interest paid	1,798	1,821
Transfer of loans to other real estate owned	535	167
Cash dividends declared but not paid	$ 51	$ 41