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Earnings Per Share Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2019
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 years ended December 31, 2017, 2018 and 2019 (in thousands, except per share data): 
 
Years Ended December 31,
 
2017
 
2018
 
2019
Numerator for basic and diluted earnings per share:
 
 
 
 
 
Net income
$
37,193

 
$
11,645

 
$
14,533

Less: Earnings allocated to unvested restricted stock
(135
)
 
(57
)
 
(62
)
Income attributable to common stockholders
$
37,058

 
$
11,588

 
$
14,471

 
 
 
 
 
 
Denominator:
 
 
 
 
 
Denominator for basic earnings per common share - weighted average shares outstanding
16,438

 
17,971

 
17,877

Effect of dilutive securities:
 
 
 
 
 
Stock options
336

 
66

 
118

Convertible subordinated notes
941

 
337

 
10

Denominator for diluted earnings per common share - weighted average shares outstanding
17,715

 
18,374

 
18,005

 
 
 
 
 
 
Basic earnings per common share
$
2.25

 
$
0.64

 
$
0.81

Diluted earnings per common share
$
2.09

 
$
0.63

 
$
0.80