Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Stockholders' Equity (Deficit)

v3.20.1
Condensed Consolidated Statements of Stockholders' Equity (Deficit) - USD ($)
$ in Thousands
Total
January 2019 Public Offering
Restricted Stock Units (RSUs)
Common Stock
Common Stock
January 2019 Public Offering
Common Stock
Restricted Stock Units (RSUs)
Additional Paid-in Capital
Additional Paid-in Capital
January 2019 Public Offering
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2018       38,932,437          
Beginning balance at Dec. 31, 2018 $ 50,090     $ 39     $ 145,147   $ (95,096)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Stock-based compensation 1,067           1,067    
Common stock issued during period (in shares)         5,175,000 317,818      
Common stock issued during period   $ 9,063     $ 5     $ 9,058  
Common stock issued for consulting services (in shares)       302,442          
Common stock issued for consulting services 1,187           1,187    
Net loss (11,708)               (11,708)
Warrants related to Veolia agreement 578           578    
Ending balance (in shares) at Mar. 31, 2019       44,727,697          
Ending Balance at Mar. 31, 2019 50,277     $ 44     157,037   (106,804)
Beginning balance (in shares) at Dec. 31, 2019       57,997,780          
Beginning balance at Dec. 31, 2019 49,589     $ 58     189,422   (139,891)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Stock-based compensation 956           956    
Common stock issued during period (in shares)           1,816,039      
Common stock issued during period     $ 2     $ 2      
Common stock issued for consulting services (in shares)       23,078          
Common stock issued for consulting services 24           24    
Net loss (4,427)               (4,427)
Ending balance (in shares) at Mar. 31, 2020       59,836,897          
Ending Balance at Mar. 31, 2020 $ 46,144     $ 60     $ 190,402   $ (144,318)