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STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
$ in Thousands
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Total
Balance, beginning at Dec. 31, 2015 $ 286 $ 96,172 $ (93,597) $ 2,861
Balance, beginning (shares) at Dec. 31, 2015 28,585,496      
Sale of common stock $ 26 962   988
Sale of common stock (shares) 2,600,000      
Stock option exercises   18   18
Stock option exercises (shares) 44,500      
Stock-based compensation   207   207
Net loss     (1,283) (1,283)
Balance, ending at Dec. 31, 2016 $ 312 97,359 (94,880) 2,791
Balance, ending (shares) at Dec. 31, 2016 31,229,996      
Sale of common stock $ 25 975   1,000
Sale of common stock (shares) 2,500,000      
Stock option exercises $ 1 46   47
Stock option exercises (shares) 117,797      
Stock-based compensation   183   183
Net loss     (789) (789)
Balance, ending at Dec. 31, 2017 $ 338 $ 98,563 $ (95,669) $ 3,232
Balance, ending (shares) at Dec. 31, 2017 33,847,793