Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited)

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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) - 6 months ended Jun. 30, 2016 - USD ($)
$ in Thousands
Preferred stock [Member]
Common stock [Member]
Additional Paid in Capital [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Deficit [Member]
Total
Balance, at beginning at Dec. 31, 2015 $ 19 $ 142,658 $ (17) $ (102,398) $ 40,262
Balance, at beginning (in shares) at Dec. 31, 2015 18,831,669        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Employee stock purchase plan 113 113
Employee stock purchase plan (in shares) 17,595        
Issuance of common stock related to restricted stock units
Issuance of common stock related to restricted stock units (in shares) 42,000        
Issuance of common stock in May and June 2016 ($2.40 per share), net of transaction expenses of $149 $ 1 2,698 2,699
Issuance of common stock in May and June 2016 ($2.40 per share), net of transaction expenses of $149 (in shares) 1,188,211        
Issuance of common stock in June 2016 ($2.00 per share), net of transaction expenses of $916 $ 5 9,079 9,084
Issuance of common stock in June 2016 ($2.00 per share), net of transaction expenses of $916 (in shares) 5,000,000        
Stock-based compensation     1,623 1,623
Foreign currency translation gain 5 5
Unrealized gain on available for sale securities 30 30
Net loss (23,782) (23,782)
Balance, at end at Jun. 30, 2016 $ 25 $ 156,171 $ 18 $ (126,180) $ 30,034
Balance, at end (in shares) at Jun. 30, 2016   25,079,475