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Net (Loss) Income Per Share
 12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Net(Loss) Income Per Share Net (Loss) Income Per Share
Basic net (loss) income per common share is computed using the weighted-average number of common shares outstanding during the period.  Diluted net income per common share is computed using the weighted-average number of common and dilutive common equivalent shares from stock options, warrants and restricted stock using the treasury stock method.
The following table sets forth the computation of basic and diluted net income per share (in thousands except for share and per share data):
 
Year Ended December 31,
 
2018
 
2017
 
2016
Net (loss) income
$
(29,979
)
 
$
64,727

 
$
390

Denominator for basic earnings (loss) per share - weighted average shares
105,596,256

 
106,121,810

 
105,928,348

Effect of dilutive securities: Stock options, warrants, and restricted stock (a)
3,538,921

 
9,991,926

 
6,717,292

Denominator for diluted earnings (loss) per share - weighted average shares adjusted for dilutive securities
105,596,256

 
116,113,736

 
112,645,640

(Loss) income per common share - basic
$
(0.28
)
 
$
0.61

 
$
0.00

(Loss) income per common share - diluted
$
(0.28
)
 
$
0.56

 
$
0.00

(a)Securities that are included in the computation of the denominator above, utilizing the treasury stock method for the years ended December 31, 2018, 2017 and 2016 are as follows:    
Effect of dilutive securities:
2018
 
2017
 
2016
Stock options
$
3,172,943

 
$
7,813,153

 
$
6,048,385

Restricted stock awards
365,978

 
2,178,773

 
668,907

 
$
3,538,921

 
$
9,991,926

 
$
6,717,292