Three months ended March 31,

2016

2015

Numerator—basic and diluted:

Net income

$

2,365

$

1,572

Denominator:

Weighted-average common shares - basic common stock

19,827,669

19,167,585

Weighted-average common shares - diluted common stock

20,783,943

20,562,040

Net income per share - basic common stock

$

0.12

$

0.08

Net income per share - diluted common stock

$

0.11

$

0.08

Denominator calculation from basic to diluted:

Weighted-average common shares - basic common stock

19,827,669

19,167,585

Warrants

—

9,649

Stock options

956,274

1,384,806

Weighted-average common shares - diluted common stock

20,783,943

20,562,040

Shares excluded from diluted weighted-average shares:

Stock options

773,033

110,000

Shares excluded from diluted weighted-average shares

773,033

110,000