Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY

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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Total
Beginning Balance at Dec. 31, 2016 $ 330 $ 132,475 $ (117,884) $ 14,921
Beginning Balance (in shares) at Dec. 31, 2016 33,009,000      
Increase (Decrease) in Stockholders' Equity        
Net Loss     (10,445) (10,445)
Issuance of common stock $ 8 15,655   15,663
Issuance of common shares (in shares) 805,000      
Stock-based compensation   3,609   3,609
Exercise of stock options $ 5 1,429   1,434
Exercise of stock options (in shares) 536,000      
Ending Balance at Dec. 31, 2017 $ 343 153,168 (128,329) 25,182
Ending Balance (in shares) at Dec. 31, 2017 34,350,000      
Increase (Decrease) in Stockholders' Equity        
Net Loss     (22,397) (22,397)
Issuance of common stock $ 35 132,672   132,707
Issuance of common shares (in shares) 3,450,000      
Stock-based compensation   7,606   7,606
Exercise of stock options $ 11 3,873   3,884
Exercise of stock options (in shares) 1,101,000      
Ending Balance at Dec. 31, 2018 $ 389 297,319 (150,726) $ 146,982
Ending Balance (in shares) at Dec. 31, 2018 38,901,000     38,900,875
Increase (Decrease) in Stockholders' Equity        
Net Loss     (29,135) $ (29,135)
Stock-based compensation   10,304   10,304
Exercise of stock options and employee stock purchase plan $ 7 3,995   4,002
Exercise of stock options and employee stock purchase plan (in shares) 689,000      
Ending Balance at Dec. 31, 2019 $ 396 $ 311,618 $ (179,861) $ 132,153
Ending Balance (in shares) at Dec. 31, 2019 39,590,000     39,589,755