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Consolidated Statement of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income (loss)
Accumulated Deficit
Total
Beginning Balance at Dec. 31, 2021 $ 3 $ 91,035 $ 9 $ (82,765) $ 8,282
Beginning Balances (in shares) at Dec. 31, 2021 31,582        
Shares issued upon exercise of options ($0.89 per share) (in shares) 11        
Shares issued upon exercise of options ($2.93 per share) (in shares) 3        
Fair value of stock issued in payment of accrued compensation   95     95
Fair value of stock issued in payment of accrued compensation (in shares) 66        
Fair value of stock options granted in payment of accrued compensation   12     12
Share based compensation   373     373
Share based compensation (in shares) 67        
Shares issued through the use of At-The Market issuance   587     587
Shares issued through the use of At-The Market issuance (in shares) 501        
Shares issued for services ($1.93 per share)   25     25
Shares issued for services ($1.93 per share) (in shares) 13        
Shares issued for services ($0.66 per share)   1     1
Shares issued for services ($0.66 per share) (in shares) 2        
Shares issued in stock offering $ 1 4,210     4,211
Shares issued in stock offering (in shares) 4,186        
Shares issued pursuant to purchase right ($1.11 per share)   1,741     1,741
Shares issued pursuant to purchase right ($1.11 per share) (in shares) 1,592        
Foreign-Exchange Translation Adjustment     (17)   (17)
Net loss       (5,758) (5,758)
Ending Balance at Dec. 31, 2022 $ 4 98,079 (8) (88,523) 9,552
Ending Balances (in shares) at Dec. 31, 2022 38,023        
Fair value of stock issued in payment of accrued compensation   234     234
Fair value of stock issued in payment of accrued compensation (in shares) 296        
Share based compensation   599     599
Share based compensation (in shares) 339        
Shares issued upon exercise of options ($0.54 per share) (in shares) 12        
Shares issued for services   3     3
Shares issued for services (in shares) 3        
Shares issued for services ($0.66 per share)   7     7
Shares issued for services ($0.66 per share) (in shares) 12        
Shares issued upon exercise of options ($1.31 per share) (in shares) 2        
Foreign-Exchange Translation Adjustment     (9)   (9)
Net loss       (5,194) (5,194)
Ending Balance at Dec. 31, 2023 $ 4 $ 98,922 $ (17) $ (93,717) $ 5,192
Ending Balances (in shares) at Dec. 31, 2023 38,687