Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 18,334	$ 17,867	$ 12,412
Other comprehensive loss, net of tax:
Unrealized losses arising during the period	(795)	(237)	(1,204)
Reclassification of net gains included in net income (net of tax expense $111, $190, and $137 in 2015, 2014 and 2013, respectively)	(160)	(271)	(196)
Income tax benefit related to unrealized losses	296	86	701
Other comprehensive income (loss), net of tax	(659)	(422)	(699)
Comprehensive income	17,675	17,445	11,713
Less: comprehensive income attributable to the noncontrolling interest	551	459	87
Comprehensive income attributable to Northrim BanCorp, Inc.	$ 17,124	$ 16,986	$ 11,626