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CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Shares
Additional paid in Capital
Accumulated Deficit
Beginning Balance at Jun. 30, 2018 $ 50,459 $ 70,406 $ 264,858 $ (214,399)
Net loss (14,542)     (14,542)
Issuance of common stock for vested restricted stock units (324) 246 (324)  
Exercise of warrants 2,186 440 2,186  
Exercise of stock options 43 23 43  
Share-based compensation expense 1,937   1,937  
Ending Balance at Sep. 30, 2018 39,759 71,115 268,700 (228,941)
Beginning Balance at Jun. 30, 2018 50,459 70,406 264,858 (214,399)
Ending Balance at Jun. 30, 2019 47,930 73,545 279,148 (231,218)
Net loss (2,994)     (2,994)
Issuance of common stock 159 64 159  
Exercise of stock options 72 46 72  
Share-based compensation expense 2,113   2,113  
Ending Balance at Sep. 30, 2019 $ 47,280 $ 73,655 $ 281,492 $ (234,212)