Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 3,464	$ 4,204	$ 9,833	$ 10,178
Other comprehensive income, net of tax:
Unrealized gains (losses) arising during the period	156	757	(763)	2,220
Reclassification of net gains included in net income (net of tax expense of $131,000 and $112,000 for the first nine months of 2013 and 2012, respectively)			(187)	(161)
Income tax benefit (expense) related to unrealized (losses) gains	(46)	(311)	331	(912)
Total other comprehensive income (loss)	110	446	(619)	1,147
Comprehensive income	3,574	4,650	9,214	11,325
Less: comprehensive income (loss) attributable to the noncontrolling interest	10	(138)	(189)	(394)
Total comprehensive income attributable to Northrim BanCorp	$ 3,584	$ 4,512	$ 9,025	$ 10,931