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NET LOSS PER COMMON SHARE (Tables)
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Schedule of net loss attributable to common shareholders and share data used in the basic and diluted earnings per share computations using the two class method
The following reflects the net loss attributable to common shareholders and share data used in the basic and diluted earnings per share computations using the two class method: 
 
 
Three months ended September 30,
 
Nine months ended September 30,
(Amounts in thousands except per share amounts)
 
2017
 
2016
 
2017
 
2016
Numerator:
 
 

 
 

 
 

 
 

Net loss
 
$
(5,407
)
 
$
(6,675
)
 
$
(17,573
)
 
$
(13,369
)
Dividends accumulated on convertible preferred stock
 
—

 
(1,931
)
 
—

 
(5,591
)
Net loss attributable to common shareholders
 
$
(5,407
)
 
$
(8,606
)
 
$
(17,573
)
 
$
(18,960
)
Denominator:
 
 

 
 

 
 

 
 

Denominator for basic and diluted EPS:
 
 

 
 

 
 

 
 

Weighted-average common shares outstanding
 
33,667

 
22,744

 
32,783

 
22,678

Net loss per share attributable to common shareholders (basic and diluted)
 
$
(0.16
)
 
$
(0.38
)
 
$
(0.54
)
 
$
(0.84
)