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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2017
Accounting Policies [Abstract]  
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
At December 31, 2017, the future estimated amortization expense for the CDI arising from our past acquisitions is as follows:
(in thousands)
2018

2019

2020

2021

2022

Thereafter

Total

Core deposit intangible amortization
$
921

$
887

$
853

$
818

$
782

$
2,231

$
6,492

At December 31, 2017, the future estimated amortization expense on the CDI from the Bank of Napa acquisition is as follows:
(in thousands)
2018

2019

2020

2021

2022

Thereafter

Total

Core deposit intangible amortization
$
508

$
499

$
488

$
475

$
460

$
1,955

$
4,385

Schedule of Earnings Per Share Reconciliation
The following table shows: 1) weighted average basic shares, 2) potentially dilutive weighted average common shares related to stock options, unvested restricted stock awards and stock warrant, and 3) weighted average diluted shares. Basic EPS are calculated by dividing net income by the weighted average number of common shares outstanding during each annual period, excluding unvested restricted stock awards. Diluted EPS are calculated using the weighted average number of potentially dilutive common shares. The number of potentially dilutive common shares included in year-to-date diluted EPS is a year-to-date weighted average of potentially dilutive common shares included in each quarterly diluted EPS computation. In computing diluted EPS, we exclude anti-dilutive shares such as options whose exercise prices exceed the current common stock price as they would not reduce EPS under the treasury method. We have two forms of our outstanding common stock: common stock and unvested restricted stock awards. Holders of unvested restricted stock awards receive non-forfeitable dividends at the same rate as common shareholders and they both share equally in undistributed earnings. Under the two-class method, the difference in EPS is nominal for these participating securities.
(in thousands, except per share data)
2017

2016

2015

Weighted average basic shares outstanding
6,196

6,073

5,966

Potentially dilutive common shares related to:
 
 
 
Stock options
62

34

41

Unvested restricted stock awards
15

8

5

Warrant


53

Weighted average diluted shares outstanding
6,273

6,115

6,065

Net income
$
15,976

$
23,134

$
18,441

Basic EPS
$
2.58

$
3.81

$
3.09

Diluted EPS
$
2.55

$
3.78

$
3.04

Weighted average anti-dilutive shares not included in the calculation of diluted EPS
21

64

36