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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2016
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]  
Calculation of Earnings Per Share
Information used to calculate earnings per share was as follows:
(In Thousands)
2016
2015
2014
Net income attributable to Northrim BanCorp, Inc.

$14,411


$17,783


$17,408

Basic weighted average common shares outstanding
6,884

6,859

6,761

Dilutive effect of potential common shares from awards granted under equity incentive program
91

89

91

Total
6,975

6,948

6,852

Earnings per common share
 
 
 
Basic

$2.09


$2.59


$2.57

Dilutive

$2.06


$2.56


$2.54