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EARNINGS PER SHARE (Tables)
 12 Months Ended
Dec. 31, 2016
Earnings Per Share [Abstract]  
Basic and diluted earnings per share
The following table provides the computation of basic and diluted earnings per share.
 
Year Ended December 31,
(in thousands, except per share data)
2016
 
2015
 
2014
Numerator:
 
 
 
 
 
Net (loss) income available to common shareholders
$
(3,950
)
 
$
8,364

 
$
(18,214
)
Effect of dilutive securities:
 
 
 
 
 
Derivative liability - warrants
(64
)
 
(1,799
)
 
—

Accretion on convertible preferred stock
—

 
222

 
—

Numerator for dilutive (loss) income per common share
(4,014
)
 
6,787

 
(18,214
)
 
 
 
 
 
 
Denominator:
 
 
 
 
 
Weighted average shares used to compute basic (loss) income per common share
27,433

 
24,333

 
17,756

Effect of dilutive securities:
 
 
 
 
 
Derivative liability - warrants
16

 
28

 
—

Convertible preferred stock
—

 
3,137

 
—

Stock options
—

 
249

 
—

Denominator for dilutive (loss) income per common share
27,449

 
27,747

 
17,756

 
 
 
 
 
 
Basic (loss) income per common share
$
(0.14
)
 
$
0.34

 
$
(1.03
)
Diluted (loss) income per common share
$
(0.15
)
 
$
0.24

 
$
(1.03
)