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Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table sets forth the computation of the basic and diluted earnings per share for the three and nine months ended September 30, 2015 and 2016 (in thousands, except per share data):
 
For the Three Months Ended September 30,
 
For the Nine Months Ended September 30,
 
2015
 
2016
 
2015
 
2016
Numerator for basic and diluted earnings per share:
 
 
 
 
 
 
 
Net income
$
4,444

 
$
5,683

 
$
15,419

 
$
15,454

Less: Earnings allocated to unvested restricted stock
(51
)
 
(25
)
 
(194
)
 
(76
)
Income attributable to common stockholders
$
4,393

 
$
5,658

 
$
15,225

 
$
15,378

 
 
 
 
 
 
 
 
Denominator:
 
 
 
 
 
 
 
Denominator for basic earnings per common share - weighted average shares outstanding
17,874

 
16,529

 
18,115

 
16,502

Effect of dilutive securities:
 
 
 
 
 
 
 
Stock options
209

 
273

 
240

 
260

Convertible subordinated notes
—

 
299

 
233

 
200

Denominator for diluted earnings per common share - weighted average shares outstanding
18,083

 
17,101

 
18,588

 
16,962

 
 
 
 
 
 
 
 
Basic earnings per common share:
$
0.24

 
$
0.34

 
$
0.84

 
$
0.93

Diluted earnings per common share:
$
0.24

 
$
0.33

 
$
0.82

 
$
0.91