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Net Loss Per Common Share (Tables)
 12 Months Ended
Dec. 31, 2016
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:
 
 
Year Ended December 31,
(Amounts in thousands, except per share amounts)
 
2016
 
2015
 
2014
Numerator:
 
 

 
 

 
 
Net loss
 
$
(19,566
)
 
$
(16,340
)
 
$
(19,920
)
Less: earnings attributable to convertible preferred stock
 
7,579

 
6,736

 
6,005

Numerator of basic and diluted EPS
 
$
(27,145
)
 
$
(23,076
)
 
$
(25,925
)
Denominator:
 
 

 
 

 
 

Denominator for basic and diluted EPS: weighted-average common shares outstanding
 
23,093

 
23,760

 
11,642

Net loss per share attributable to common shareholders (basic and diluted)
 
$
(1.18
)
 
$
(0.97
)
 
$
(2.23
)