Selected Quarterly Financial Data (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
Selected Quarterly Financial Data (Unaudited)
 
 
Quarter Ended
 
 
March 31
 
June 30
 
September 30
 
December 31
 
 
(In thousands, except per share data)
Year Ended December 31, 2015
 
 
 
 
 
 
 
 
Net revenues
 
$
16,748

 
$
18,642

 
$
18,363

 
$
18,547

Gross profit
 
5,579

 
6,533

 
6,141

 
5,057

Operating loss
 
(12,451
)
 
(14,824
)
 
(10,443
)
 
(12,538
)
Net loss
 
(15,274
)
 
(19,487
)
 
(11,578
)
 
(13,045
)
Net loss per share attributable to common stockholders, basic and diluted¹
 
$
(1.00
)
 
$
(1.01
)
 
$
(0.47
)
 
$
(0.53
)
 
 
 
 
 
 
 
 
 
Year Ended December 31, 2014
 
 
 
 
 
 
 
 
Net revenues
 
$
13,847

 
$
15,081

 
$
14,169

 
$
18,322

Gross profit
 
6,394

 
5,291

 
5,791

 
5,035

Operating loss
 
(10,138
)
 
(12,566
)
 
(11,710
)
 
(12,801
)
Net loss
 
(10,878
)
 
(13,708
)
 
(14,027
)
 
(15,031
)
Net loss per share attributable to common stockholders, basic and diluted¹
 
$
(0.90
)
 
$
(1.13
)
 
$
(1.16
)
 
$
(1.10
)
¹Net loss per share is calculated independently for each quarter presented. Therefore, the sum of the quarterly net loss per share amounts will not necessarily equal the total for the year.