XML 74 R62.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Note 13 - Capital Stock (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
May 08, 2024
Mar. 03, 2023
Dec. 30, 2020
Jun. 30, 2023
Dec. 31, 2022
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2023
Dec. 31, 2023
Common Stock, Shares Authorized (in shares)           300,000,000 300,000,000   300,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share)     $ 0.0001     $ 0.0001 $ 0.0001   $ 0.0001
Preferred Stock, Shares Authorized (in shares)           1,000,000 1,000,000   1,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)           $ 0.0001 $ 0.0001   $ 0.0001
Common Stock, Shares, Issued (in shares)           128,433,721 128,422,851   128,422,851
Preferred Stock, Shares Issued (in shares)           0 0   0
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)           105,432,083 105,432,083   105,432,083
Common Stock, Shares, Outstanding (in shares)           128,433,721 128,422,851   128,422,851
Preferred Stock, Shares Outstanding (in shares)           0 0   0
ATM Facility [Member]                  
Aggregate Offering Price         $ 50,000        
Fixed Commission Rate Percentage           3.00%      
Stock Issued During Period, Shares, New Issues (in shares)           0 2,895,090    
Proceeds from Issuance of Common Stock               $ 4,500  
Payments for Commissions               $ 100  
ATM Facility [Member] | Subsequent Event [Member]                  
Aggregate Offering Price $ 12,300                
Canaccord [Member] | Underwriting Agreement [Member]                  
Unit Issued During Period, Units, New Issues (in shares)       50,000,000          
Unit Issued, Price Per Unit (in dollars per share)       $ 0.8          
Each Unit, Number of Common Stock (in shares)       1          
Proceeds from Issuance or Sale of Equity       $ 40,000          
Payment for Underwriting Fees and Commissions       2,400          
Payments of Stock Issuance Costs       200          
Gain (Loss) on Issuance of Equity       $ (14,800)          
Lincoln Park Capital Fund, LLC [Member]                  
Stock Issued During Period, Shares, New Issues (in shares)   332,668              
Purchase Agreement, Commencing Period (Month)   36 months              
Purchase Agreement, Regular Purchase (in shares)   75,000              
Purchase Agreement, Regular Purchase, Shares, Closing Price One (in shares)   100,000              
Purchase Agreement, Closing Price One (in dollars per share)   $ 1              
Purchase Agreement, Regular Purchase, Shares, Closing Price Two (in shares)   150,000              
Purchase Agreement, Closing Price Two (in dollars per share)   $ 2              
Purchase Agreement, Regular Purchase, Shares, Closing Price Three (in shares)   200,000              
Purchase Agreement, Closing Price Three (in dollars per share)   $ 4              
Purchase Agreement, Accelerated Purchase, Maximum Percentage of Regular Purchase   300.00%              
Purchase Agreement, Accelerated Purchase, Maximum Percentage Of Prior Day Volume   30.00%              
Purchase Agreement, Additional Accelerated Purchase, Maximum Percentage of Regular Purchase   300.00%              
Purchase Agreement, Additional Accelerated Purchase, Maximum Percentage of Prior Day Volume   30.00%              
Purchase Agreement, Price Discount of Additional Purchases   97.00%              
Purchase Agreement, Additional Commitment Shares (in shares)   166,334              
Purchase Agreement, Shares Sell Limitation (in shares)   15,310,115              
Purchase Agreement, Shares Sell Limitation, Percentage Of Outstanding Shares   19.99%              
Percentage of Common Stock Beneficial Ownership   4.99%              
Derivative, Notional Amount           $ 0 $ 0   $ 0
Lincoln Park Capital Fund, LLC [Member] | Maximum [Member]                  
Purchase Agreement, Amount Of Shares Commit To Purchase   $ 25,000              
Percentage of Common Stock Beneficial Ownership   9.99%              
Lincoln Park Capital Fund, LLC [Member] | Minimum [Member]                  
Purchase Agreement, Minimum Average Price Per Share To Avoid Sell Limitation (in dollars per share)   $ 1.2404              
Lincoln Park [Member] | Purchase Agreement [Member]                  
Stock Issued During Period, Shares, New Issues (in shares)           0   0  
Warrants Originally Issued by Tottenham Acquisition I Limited [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     2,407,500            
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)     0.5            
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)     $ 0.01            
Class of Warrant or Right, Redemption, Threshold Stock Price Trigger (in dollars per share)     $ 16.5            
Class of Warrant or Right, Redemption, Threshold Consecutive Trading Days (Day)     20 days            
Class of Warrant or Right, Redemption, Threshold Trading Days (Day)     30 days            
Class of Warrant or Right, Exercised During Period (in shares)           0     0
Chardan Unit Purchase Option [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     24,583            
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)     0.5            
Class of Warrant or Right, Exercised During Period (in shares)           0     0
New Avenue Warrant [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)             3,000,000   3,000,000
Class of Warrant or Right, Exercised During Period (in shares)           0     0
Tranche A Warrant [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       50,000,000          
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)       1          
Class of Warrant or Right, Exercised During Period (in shares)           0     0
Tranche A Warrant [Member] | Canaccord [Member]                  
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)       1          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)       $ 1.1          
Each Unit, Number of Warrant (in shares)       1          
Tranche B Warrant [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       50,000,000          
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)       1          
Class of Warrant or Right, Exercised During Period (in shares)           0     0
Tranche B Warrant [Member] | Canaccord [Member]                  
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)       1          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)       $ 1.5          
Each Unit, Number of Warrant (in shares)       1