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CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) (USD $) - 6 months ended Jun. 30, 2015 - USD ($)
$ in Thousands
Preferred Stock
Common Stock
Additional Paid-In Capital
Deficit
Total
Beginning Balance, Shares at Dec. 31, 2014   17,852      
Beginning Balance, Amount at Dec. 31, 2014   $ 18 $ 29,334 $ (27,848) $ 1,504
Options exercised, Shares   98      
Options exercised, Amount     220   220
Warrants exercised, Shares   739      
Warrants exercised, Amount     1,519   1,519
Issuance of common stock, Shares   5,219      
Issuance of common stock, Amount   $ 5 $ 11,526   11,531
Conversion of Series A preferred stock and common warrants to Series B preferred stock, Shares 3,588        
Conversion of Series A preferred stock and common warrants to Series B preferred stock, Amount $ 4     $ 13,957 13,961
Conversion of Series B preferred stock to common stock, Shares (1,612) 3,225      
Conversion of Series B preferred stock to common stock, Amount $ (2) $ 4 $ (3)   (1)
Stock based compensation     242   242
Stock swap to acquire options, Shares   (81)      
Stock swap to acquire options, Amount     $ (273)   (273)
Accretion on convertible preferred stock       $ (222) (222)
Net income (loss)       (2,375) (2,375)
Ending Balance, Shares at Jun. 30, 2015 1,976 27,052      
Ending Balance, Amount at Jun. 30, 2015 $ 2 $ 27 $ 42,565 $ (16,488) $ 26,106