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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2015
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)
2015
2014
2013
Net income attributable to Northrim BanCorp, Inc.

$17,783


$17,408


$12,325

Basic weighted average common shares outstanding
6,859

6,761

6,519

Dilutive effect of potential common shares from awards granted under equity incentive program
89

91

91

Total
6,948

6,852

6,610

Earnings per common share
 
 
 
Basic

$2.59


$2.57


$1.89

Dilutive

$2.56


$2.54


$1.87