Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 4,943	$ 4,464	$ 8,576	$ 7,166
Other comprehensive income, net of tax:
Unrealized gains (losses) arising during the period	(152)	612	736	707
Reclassification of net gains included in net income (net of tax expense of $7 and $143 for the second quarter of 2015 and 2014, respectively and $53 and $183 for the first six months of 2015 and 2014, respectively)	(9)	(206)	(77)	(263)
Income tax expense related to unrealized gains	58	(221)	(263)	(260)
Other comprehensive income (loss)	(103)	185	396	184
Comprehensive income	4,840	4,649	8,972	7,350
Less: comprehensive income attributable to the noncontrolling interest	162	95	234	139
Comprehensive income attributable to Northrim BanCorp, Inc.	$ 4,678	$ 4,554	$ 8,738	$ 7,211