Three months

ended September 30,

Nine months

ended September 30,

2013

2012

2013

2012

Numerator for basic and diluted earnings per share - net income

$

2,128

$

2,074

$

6,430

$

7,050

Denominator for basic earnings per share - weighted average shares outstanding

3,253,939

3,202,104

3,243,385

3,191,226

Effect of dilutive securities - employee stock options

12,542

13,572

11,543

13,605

Denominator for diluted earnings per share - adjusted weighted average shares outstanding

3,266,481

3,215,676

3,254,928

3,204,831

Earnings per share - basic

$

0.65

$

0.65

$

1.98

$

2.21

Earnings per share - diluted

$

0.65

$

0.64

$

1.98

$

2.20