Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 5,532	$ 3,898	$ 14,107	$ 11,063
Other comprehensive income, net of tax:
Unrealized gains (losses) arising during the period	217	(307)	953	400
Reclassification of net gains included in net income (net of tax expense of $2 and $6 for the third quarter of 2015 and 2014, respectively and $55 and $190 for the first nine months of 2015 and 2014, respectively)	(2)	(9)	(79)	(271)
Income tax (benefit) expense related to unrealized gains and losses	(74)	108	(337)	(152)
Other comprehensive income (loss)	141	(208)	537	(23)
Comprehensive income	5,673	3,690	14,644	11,040
Less: comprehensive income attributable to the noncontrolling interest	197	191	431	329
Comprehensive income attributable to Northrim BanCorp, Inc.	$ 5,476	$ 3,499	$ 14,213	$ 10,711