XML 22 R6.htm IDEA: XBRL DOCUMENT v3.6.0.2
Statements of Changes in Convertible Preferred Stock and Stockholders' Equity - USD ($)
$ in Thousands
Total
Preferred Stock
Series A Convertible Preferred Stock
Preferred Stock
Series B Convertible Preferred Stock
Preferred Stock
Series C Convertible Preferred Stock
Preferred Stock
Series C-1 Convertible Preferred Stock
Preferred Stock
Series C-2 Convertible Preferred Stock
Preferred Stock
Series D-1 Convertible Preferred Stock
Preferred Stock
Series D-2 Convertible Preferred Stock
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Beginning balance at Dec. 31, 2013 $ (108,109) $ 250 $ 4,215 $ 28,121 $ 0 $ 13,500 $ 16,952 $ 24,119 $ 0 $ 5,168 $ (113,277)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Net loss (4,234)                   (4,234)
Exercise of stock options 9                 9  
Stock-based compensation expense (Note 10) 1,201                 1,201  
Issuance of stock 54,583             544 6 54,577  
Reclassification of warrants issued with preferred stock to derivative liability               (544)      
Beneficial conversion feature for sale of preferred stock (909)             909   (909)  
Beneficial conversion feature for antidilution adjustment (214)   18 153   43       (214)  
Adjustment of preferred stock to liquidation value (510)   (18) (153)   (43)   724   (510)  
Conversion of preferred stock into shares of common stock 88,790 (250) (4,215) (28,121)   (13,500) (16,952) (25,752) 2 88,788  
Warrant derivative liability reclassified to additional paid-in capital 2,701                 2,701  
Exercise of common stock warrants 55                 55  
Issuance of common stock - ESPP 68                 68  
Ending balance at Dec. 31, 2014 33,431 0 0 0 0 0 0 0 8 150,934 (117,511)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Net loss (32,623)                   (32,623)
Stock-based compensation expense (Note 10) 3,023                 3,023  
Issuance of stock 38,012               6 38,006  
Issuance of common stock - ESPP 106                 106  
Ending balance at Dec. 31, 2015 41,949 0 0 0 0 0 0 0 14 192,069 (150,134)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Net loss (29,989)                   (29,989)
Stock-based compensation expense (Note 10) 1,210                 1,210  
Debt discount for Solar Warrant 244                 244  
Issuance of stock 21,386               10 21,376  
Issuance of common stock - ESPP 19                 19  
Ending balance at Dec. 31, 2016 $ 34,819 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 24 $ 214,918 $ (180,123)